welcome.php\n<\/p>\n\n
\n\n 国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂\n\n\nWelcome <?php echo $_POST[\"name\"]; ?>\nYour email address is: <?php echo $_POST[\"email\"]; ?>\n\n<\/body>\n<\/html>\n<\/pre>\n\n2. Complete example of PHP form verification\n<\/strong><\/p>\n\n\n\n\n<\/head>\n \n\n<?php\n\/\/ 定義變量并設置為空值\n$nameErr = $emailErr = $websiteErr = \"\";\n$name = $email = $website = \"\";\n\nif ($_SERVER[\"REQUEST_METHOD\"] == \"POST\") {\n if (empty($_POST[\"name\"])) {\n $nameErr = \"姓名是必填的\";\n } else {\n $name = test_input($_POST[\"name\"]);\n \/\/ 檢查姓名是否包含字母和空白字符\n \/\/preg_match() 函數(shù)檢索字符串的模式，如果模式存在則返回 true，否則返回 false。\n if (!preg_match(\"\/^[a-zA-Z ]*$\/\",$name)) {\n $nameErr = \"只允許字母和空格\"; \n }\n }\n \n if (empty($_POST[\"email\"])) {\n $emailErr = \"電郵是必填的\";\n } else {\n $email = test_input($_POST[\"email\"]);\n \/\/ 檢查電子郵件地址語法是否有效\n if (!preg_match(\"\/([\\w\\-]+\\@[\\w\\-]+\\.[\\w\\-]+)\/\",$email)) {\n $emailErr = \"無效的 email 格式\"; \n }\n }\n \n if (empty($_POST[\"website\"])) {\n $website = \"\";\n } else {\n $website = test_input($_POST[\"website\"]);\n \/\/ 檢查 URL 地址語法是否有效（正則表達式也允許 URL 中的斜杠）\n if (!preg_match(\"\/\\b(?:(?:https?|ftp):\\\/\\\/|www\\.)[-a-z0-9+&@#\\\/%?=~_|!:,.;]*[-a-z0-9+&@#\\\/%=~_|]\/i\",$website)) {\n $websiteErr = \"無效的 URL\"; \n }\n }\n\n}\n\nfunction test_input($data) {\n \/\/去除用戶輸入數(shù)據(jù)中不必要的字符（多余的空格、制表符、換行）\n $data = trim($data);\n \/\/刪除用戶輸入數(shù)據(jù)中的反斜杠（\\）\n $data = stripslashes($data);\n \/\/把特殊字符轉換為 HTML 實體\n $data = htmlspecialchars($data);\n return $data;\n}\n?>\n\nPHP 驗證實例<\/h2>\n* 必需的字段<\/span><\/p>\n\n\"> \n \n 姓名：\">\n * <?php echo $nameErr;?><\/span>\n \n 郵箱：\">\n * <?php echo $emailErr;?><\/span>\n \n 網(wǎng)址：\">\n <?php echo $websiteErr;?><\/span>\n \n \n<\/form>\n\n<?php\necho \"您的輸入：<\/h2>\";\necho $name;\necho \"\";\necho $email;\necho \"\";\necho $website;\necho \"\";\n?>\n\n<\/body>\n<\/html>\n<\/pre>\n\nI hope this article will help you learn PHP programming. <\/p>\n\n\n\nArticles you may be interested in:<\/h4>\n\nRegular expressions commonly used for form validation in php<\/li>\nphp form validation implementation code<\/li>\nCommonly used in PHP development Summary of the use of the three form validation functions<\/li>\nHow to use the three PHP form validation functions ISSET(), empty(), and is_numeric()<\/li>\nphp tp validation form and autofill function code<\/li>\nDetailed explanation of form verification based on PHP Ajax<\/li>\nSpecific examples of using js for form verification on the PHP user registration page<\/li>\nThinkPHP form automatic submission verification example tutorial<\/li>\nThinkPHP Example of automatic form verification<\/li>\nthinkPHP implements automatic form verification<\/li>\n<\/ul>\n<\/p>\n\nhttp:\/\/www.bkjia.com\/PHPjc\/1105381.html<\/span>www.bkjia.com<\/span>true<\/span>http: \/\/www.bkjia.com\/PHPjc\/1105381.html<\/span>TechArticle<\/span>php programming must learn form verification every day, php programming form This article explains the implementation method of php form verification with examples, share For your reference, the specific content is as follows 1. PHP form processing w...<\/span>\n<\/div>\n<\/div>"} Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents PHP programming must learn form verification every day, PHP programming form Articles you may be interested in: Home Backend Development PHP Tutorial PHP programming must learn form validation every day, PHP programming form_PHP tutorial PHP programming must learn form validation every day, PHP programming form_PHP tutorial WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB Jul 12, 2016 am 08:58 AM php form PHP programming must learn form verification every day, PHP programming form This article explains the implementation method of PHP form verification through examples, and shares it with everyone for your reference. The specific content is as follows 1.PHP form processing welcome.html <html> <body> <form action="welcome.php" method="post"> Name: <input type="text" name="name"><br> E-mail: <input type="text" name="email"><br> <input type="submit"> </form> </body> </html> welcome.php <html> <body> <!--PHP 超全局變量 $_GET 和 $_POST 用于收集表單數(shù)據(jù)（form-data)--> Welcome <?php echo $_POST["name"]; ?><br> Your email address is: <?php echo $_POST["email"]; ?> </body> </html> 2. Complete example of PHP form verification <html> <head> </head> <body> <?php // 定義變量并設置為空值 $nameErr = $emailErr = $websiteErr = ""; $name = $email = $website = ""; if ($_SERVER["REQUEST_METHOD"] == "POST") { if (empty($_POST["name"])) { $nameErr = "姓名是必填的"; } else { $name = test_input($_POST["name"]); // 檢查姓名是否包含字母和空白字符 //preg_match() 函數(shù)檢索字符串的模式，如果模式存在則返回 true，否則返回 false。 if (!preg_match("/^[a-zA-Z ]*$/",$name)) { $nameErr = "只允許字母和空格"; } } if (empty($_POST["email"])) { $emailErr = "電郵是必填的"; } else { $email = test_input($_POST["email"]); // 檢查電子郵件地址語法是否有效 if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email)) { $emailErr = "無效的 email 格式"; } } if (empty($_POST["website"])) { $website = ""; } else { $website = test_input($_POST["website"]); // 檢查 URL 地址語法是否有效（正則表達式也允許 URL 中的斜杠） if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) { $websiteErr = "無效的 URL"; } } } function test_input($data) { //去除用戶輸入數(shù)據(jù)中不必要的字符（多余的空格、制表符、換行） $data = trim($data); //刪除用戶輸入數(shù)據(jù)中的反斜杠（\） $data = stripslashes($data); //把特殊字符轉換為 HTML 實體 $data = htmlspecialchars($data); return $data; } ?> <h2>PHP 驗證實例</h2> <p><span class="error">* 必需的字段</span></p> <!--htmlspecialchars() 函數(shù)把特殊字符轉換為 HTML 實體。--> <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>"> <!--value:保留表單中的值--> 姓名：<input type="text" name="name" value="<?php echo $name;?>"> <span class="error">* <?php echo $nameErr;?></span> <br><br> 郵箱：<input type="text" name="email" value="<?php echo $email;?>"> <span class="error">* <?php echo $emailErr;?></span> <br><br> 網(wǎng)址：<input type="text" name="website" value="<?php echo $website;?>"> <span class="error"><?php echo $websiteErr;?></span> <br><br> <input type="submit" name="submit" value="提交"> </form> <?php echo "<h2>您的輸入：</h2>"; echo $name; echo "<br>"; echo $email; echo "<br>"; echo $website; echo "<br>"; ?> </body> </html> I hope this article will help you learn PHP programming. Articles you may be interested in: Regular expressions commonly used for form validation in php php form validation implementation code Commonly used in PHP development Summary of the use of the three form validation functions How to use the three PHP form validation functions ISSET(), empty(), and is_numeric() php tp validation form and autofill function code Detailed explanation of form verification based on PHP Ajax Specific examples of using js for form verification on the PHP user registration page ThinkPHP form automatic submission verification example tutorial ThinkPHP Example of automatic form verification thinkPHP implements automatic form verification http://www.bkjia.com/PHPjc/1105381.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1105381.htmlTechArticlephp programming must learn form verification every day, php programming form This article explains the implementation method of php form verification with examples, share For your reference, the specific content is as follows 1. PHP form processing w... Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060533 fails to install in Windows 10? 3 weeks ago By DDD Dune: Awakening - Where To Get Insulated Fabric 3 weeks ago By Jack chen Gmail Login: How to Sign Up, Sign In, or Sign Out of Gmail - MiniTool 1 months ago By Jack chen How to fix KB5060999 fails to install in Windows 11? 3 weeks ago By DDD Guild Guide In Tainted Grail: The Fall Of Avalon 4 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8517 17 Java Tutorial 1742 16 CakePHP Tutorial 1596 56 Laravel Tutorial 1536 28 PHP Tutorial 1396 31 Show More Related knowledge How do I stay up-to-date with the latest PHP developments and best practices? Jun 23, 2025 am 12:56 AM TostaycurrentwithPHPdevelopmentsandbestpractices,followkeynewssourceslikePHP.netandPHPWeekly,engagewithcommunitiesonforumsandconferences,keeptoolingupdatedandgraduallyadoptnewfeatures,andreadorcontributetoopensourceprojects.First,followreliablesource What is PHP, and why is it used for web development? Jun 23, 2025 am 12:55 AM PHPbecamepopularforwebdevelopmentduetoitseaseoflearning,seamlessintegrationwithHTML,widespreadhostingsupport,andalargeecosystemincludingframeworkslikeLaravelandCMSplatformslikeWordPress.Itexcelsinhandlingformsubmissions,managingusersessions,interacti How to set PHP time zone? Jun 25, 2025 am 01:00 AM TosettherighttimezoneinPHP,usedate_default_timezone_set()functionatthestartofyourscriptwithavalididentifiersuchas'America/New_York'.1.Usedate_default_timezone_set()beforeanydate/timefunctions.2.Alternatively,configurethephp.inifilebysettingdate.timez How do I validate user input in PHP to ensure it meets certain criteria? Jun 22, 2025 am 01:00 AM TovalidateuserinputinPHP,usebuilt-invalidationfunctionslikefilter_var()andfilter_input(),applyregularexpressionsforcustomformatssuchasusernamesorphonenumbers,checkdatatypesfornumericvalueslikeageorprice,setlengthlimitsandtrimwhitespacetopreventlayout What is data serialization in PHP (serialize(), unserialize())? Jun 22, 2025 am 01:03 AM ThePhpfunctionSerialize () andunserialize () AreusedtoconvertcomplexdaTastructdestoresintostoraSandaBackagain.1.Serialize () c OnvertsdatalikecarraysorobjectsraystringcontainingTypeandstructureinformation.2.unserialize () Reconstruct theoriginalatataprom How do I embed PHP code in an HTML file? Jun 22, 2025 am 01:00 AM You can embed PHP code into HTML files, but make sure that the file has an extension of .php so that the server can parse it correctly. Use standard tags to wrap PHP code, insert dynamic content anywhere in HTML. In addition, you can switch PHP and HTML multiple times in the same file to realize dynamic functions such as conditional rendering. Be sure to pay attention to the server configuration and syntax correctness to avoid problems caused by short labels, quotation mark errors or omitted end labels. What are the best practices for writing clean and maintainable PHP code? Jun 24, 2025 am 12:53 AM The key to writing clean and easy-to-maintain PHP code lies in clear naming, following standards, reasonable structure, making good use of comments and testability. 1. Use clear variables, functions and class names, such as $userData and calculateTotalPrice(); 2. Follow the PSR-12 standard unified code style; 3. Split the code structure according to responsibilities, and organize it using MVC or Laravel-style catalogs; 4. Avoid noodles-style code and split the logic into small functions with a single responsibility; 5. Add comments at key points and write interface documents to clarify parameters, return values ??and exceptions; 6. Improve testability, adopt dependency injection, reduce global state and static methods. These practices improve code quality, collaboration efficiency and post-maintenance ease. How do I execute SQL queries using PHP? Jun 24, 2025 am 12:54 AM Yes,youcanrunSQLqueriesusingPHP,andtheprocessinvolveschoosingadatabaseextension,connectingtothedatabase,executingqueriessafely,andclosingconnectionswhendone.Todothis,firstchoosebetweenMySQLiorPDO,withPDObeingmoreflexibleduetosupportingmultipledatabas See all articles <td id="c4hac"></td><ol id="c4hac"><dfn id="c4hac"><kbd id="c4hac"></kbd></dfn></ol><td id="c4hac"></td><ol id="c4hac"></ol>
2. Complete example of PHP form verification\n<\/strong><\/p>\n\n\n\n\n<\/head>\n \n\n<?php\n\/\/ 定義變量并設置為空值\n$nameErr = $emailErr = $websiteErr = \"\";\n$name = $email = $website = \"\";\n\nif ($_SERVER[\"REQUEST_METHOD\"] == \"POST\") {\n if (empty($_POST[\"name\"])) {\n $nameErr = \"姓名是必填的\";\n } else {\n $name = test_input($_POST[\"name\"]);\n \/\/ 檢查姓名是否包含字母和空白字符\n \/\/preg_match() 函數(shù)檢索字符串的模式，如果模式存在則返回 true，否則返回 false。\n if (!preg_match(\"\/^[a-zA-Z ]*$\/\",$name)) {\n $nameErr = \"只允許字母和空格\"; \n }\n }\n \n if (empty($_POST[\"email\"])) {\n $emailErr = \"電郵是必填的\";\n } else {\n $email = test_input($_POST[\"email\"]);\n \/\/ 檢查電子郵件地址語法是否有效\n if (!preg_match(\"\/([\\w\\-]+\\@[\\w\\-]+\\.[\\w\\-]+)\/\",$email)) {\n $emailErr = \"無效的 email 格式\"; \n }\n }\n \n if (empty($_POST[\"website\"])) {\n $website = \"\";\n } else {\n $website = test_input($_POST[\"website\"]);\n \/\/ 檢查 URL 地址語法是否有效（正則表達式也允許 URL 中的斜杠）\n if (!preg_match(\"\/\\b(?:(?:https?|ftp):\\\/\\\/|www\\.)[-a-z0-9+&@#\\\/%?=~_|!:,.;]*[-a-z0-9+&@#\\\/%=~_|]\/i\",$website)) {\n $websiteErr = \"無效的 URL\"; \n }\n }\n\n}\n\nfunction test_input($data) {\n \/\/去除用戶輸入數(shù)據(jù)中不必要的字符（多余的空格、制表符、換行）\n $data = trim($data);\n \/\/刪除用戶輸入數(shù)據(jù)中的反斜杠（\\）\n $data = stripslashes($data);\n \/\/把特殊字符轉換為 HTML 實體\n $data = htmlspecialchars($data);\n return $data;\n}\n?>\n\nPHP 驗證實例<\/h2>\n* 必需的字段<\/span><\/p>\n\n\"> \n \n 姓名：\">\n * <?php echo $nameErr;?><\/span>\n \n 郵箱：\">\n * <?php echo $emailErr;?><\/span>\n \n 網(wǎng)址：\">\n <?php echo $websiteErr;?><\/span>\n \n \n<\/form>\n\n<?php\necho \"您的輸入：<\/h2>\";\necho $name;\necho \"\";\necho $email;\necho \"\";\necho $website;\necho \"\";\n?>\n\n<\/body>\n<\/html>\n<\/pre>\n\nI hope this article will help you learn PHP programming. <\/p>\n\n\n\nArticles you may be interested in:<\/h4>\n\nRegular expressions commonly used for form validation in php<\/li>\nphp form validation implementation code<\/li>\nCommonly used in PHP development Summary of the use of the three form validation functions<\/li>\nHow to use the three PHP form validation functions ISSET(), empty(), and is_numeric()<\/li>\nphp tp validation form and autofill function code<\/li>\nDetailed explanation of form verification based on PHP Ajax<\/li>\nSpecific examples of using js for form verification on the PHP user registration page<\/li>\nThinkPHP form automatic submission verification example tutorial<\/li>\nThinkPHP Example of automatic form verification<\/li>\nthinkPHP implements automatic form verification<\/li>\n<\/ul>\n<\/p>\n\nhttp:\/\/www.bkjia.com\/PHPjc\/1105381.html<\/span>www.bkjia.com<\/span>true<\/span>http: \/\/www.bkjia.com\/PHPjc\/1105381.html<\/span>TechArticle<\/span>php programming must learn form verification every day, php programming form This article explains the implementation method of php form verification with examples, share For your reference, the specific content is as follows 1. PHP form processing w...<\/span>\n<\/div>\n<\/div>"} Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents PHP programming must learn form verification every day, PHP programming form Articles you may be interested in: Home Backend Development PHP Tutorial PHP programming must learn form validation every day, PHP programming form_PHP tutorial PHP programming must learn form validation every day, PHP programming form_PHP tutorial WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB Jul 12, 2016 am 08:58 AM php form PHP programming must learn form verification every day, PHP programming form This article explains the implementation method of PHP form verification through examples, and shares it with everyone for your reference. The specific content is as follows 1.PHP form processing welcome.html <html> <body> <form action="welcome.php" method="post"> Name: <input type="text" name="name"><br> E-mail: <input type="text" name="email"><br> <input type="submit"> </form> </body> </html> welcome.php <html> <body> <!--PHP 超全局變量 $_GET 和 $_POST 用于收集表單數(shù)據(jù)（form-data)--> Welcome <?php echo $_POST["name"]; ?><br> Your email address is: <?php echo $_POST["email"]; ?> </body> </html> 2. Complete example of PHP form verification <html> <head> </head> <body> <?php // 定義變量并設置為空值 $nameErr = $emailErr = $websiteErr = ""; $name = $email = $website = ""; if ($_SERVER["REQUEST_METHOD"] == "POST") { if (empty($_POST["name"])) { $nameErr = "姓名是必填的"; } else { $name = test_input($_POST["name"]); // 檢查姓名是否包含字母和空白字符 //preg_match() 函數(shù)檢索字符串的模式，如果模式存在則返回 true，否則返回 false。 if (!preg_match("/^[a-zA-Z ]*$/",$name)) { $nameErr = "只允許字母和空格"; } } if (empty($_POST["email"])) { $emailErr = "電郵是必填的"; } else { $email = test_input($_POST["email"]); // 檢查電子郵件地址語法是否有效 if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email)) { $emailErr = "無效的 email 格式"; } } if (empty($_POST["website"])) { $website = ""; } else { $website = test_input($_POST["website"]); // 檢查 URL 地址語法是否有效（正則表達式也允許 URL 中的斜杠） if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) { $websiteErr = "無效的 URL"; } } } function test_input($data) { //去除用戶輸入數(shù)據(jù)中不必要的字符（多余的空格、制表符、換行） $data = trim($data); //刪除用戶輸入數(shù)據(jù)中的反斜杠（\） $data = stripslashes($data); //把特殊字符轉換為 HTML 實體 $data = htmlspecialchars($data); return $data; } ?> <h2>PHP 驗證實例</h2> <p><span class="error">* 必需的字段</span></p> <!--htmlspecialchars() 函數(shù)把特殊字符轉換為 HTML 實體。--> <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>"> <!--value:保留表單中的值--> 姓名：<input type="text" name="name" value="<?php echo $name;?>"> <span class="error">* <?php echo $nameErr;?></span> <br><br> 郵箱：<input type="text" name="email" value="<?php echo $email;?>"> <span class="error">* <?php echo $emailErr;?></span> <br><br> 網(wǎng)址：<input type="text" name="website" value="<?php echo $website;?>"> <span class="error"><?php echo $websiteErr;?></span> <br><br> <input type="submit" name="submit" value="提交"> </form> <?php echo "<h2>您的輸入：</h2>"; echo $name; echo "<br>"; echo $email; echo "<br>"; echo $website; echo "<br>"; ?> </body> </html> I hope this article will help you learn PHP programming. Articles you may be interested in: Regular expressions commonly used for form validation in php php form validation implementation code Commonly used in PHP development Summary of the use of the three form validation functions How to use the three PHP form validation functions ISSET(), empty(), and is_numeric() php tp validation form and autofill function code Detailed explanation of form verification based on PHP Ajax Specific examples of using js for form verification on the PHP user registration page ThinkPHP form automatic submission verification example tutorial ThinkPHP Example of automatic form verification thinkPHP implements automatic form verification http://www.bkjia.com/PHPjc/1105381.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1105381.htmlTechArticlephp programming must learn form verification every day, php programming form This article explains the implementation method of php form verification with examples, share For your reference, the specific content is as follows 1. PHP form processing w... Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060533 fails to install in Windows 10? 3 weeks ago By DDD Dune: Awakening - Where To Get Insulated Fabric 3 weeks ago By Jack chen Gmail Login: How to Sign Up, Sign In, or Sign Out of Gmail - MiniTool 1 months ago By Jack chen How to fix KB5060999 fails to install in Windows 11? 3 weeks ago By DDD Guild Guide In Tainted Grail: The Fall Of Avalon 4 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8517 17 Java Tutorial 1742 16 CakePHP Tutorial 1596 56 Laravel Tutorial 1536 28 PHP Tutorial 1396 31 Show More Related knowledge How do I stay up-to-date with the latest PHP developments and best practices? Jun 23, 2025 am 12:56 AM TostaycurrentwithPHPdevelopmentsandbestpractices,followkeynewssourceslikePHP.netandPHPWeekly,engagewithcommunitiesonforumsandconferences,keeptoolingupdatedandgraduallyadoptnewfeatures,andreadorcontributetoopensourceprojects.First,followreliablesource What is PHP, and why is it used for web development? Jun 23, 2025 am 12:55 AM PHPbecamepopularforwebdevelopmentduetoitseaseoflearning,seamlessintegrationwithHTML,widespreadhostingsupport,andalargeecosystemincludingframeworkslikeLaravelandCMSplatformslikeWordPress.Itexcelsinhandlingformsubmissions,managingusersessions,interacti How to set PHP time zone? Jun 25, 2025 am 01:00 AM TosettherighttimezoneinPHP,usedate_default_timezone_set()functionatthestartofyourscriptwithavalididentifiersuchas'America/New_York'.1.Usedate_default_timezone_set()beforeanydate/timefunctions.2.Alternatively,configurethephp.inifilebysettingdate.timez How do I validate user input in PHP to ensure it meets certain criteria? Jun 22, 2025 am 01:00 AM TovalidateuserinputinPHP,usebuilt-invalidationfunctionslikefilter_var()andfilter_input(),applyregularexpressionsforcustomformatssuchasusernamesorphonenumbers,checkdatatypesfornumericvalueslikeageorprice,setlengthlimitsandtrimwhitespacetopreventlayout What is data serialization in PHP (serialize(), unserialize())? Jun 22, 2025 am 01:03 AM ThePhpfunctionSerialize () andunserialize () AreusedtoconvertcomplexdaTastructdestoresintostoraSandaBackagain.1.Serialize () c OnvertsdatalikecarraysorobjectsraystringcontainingTypeandstructureinformation.2.unserialize () Reconstruct theoriginalatataprom How do I embed PHP code in an HTML file? Jun 22, 2025 am 01:00 AM You can embed PHP code into HTML files, but make sure that the file has an extension of .php so that the server can parse it correctly. Use standard tags to wrap PHP code, insert dynamic content anywhere in HTML. In addition, you can switch PHP and HTML multiple times in the same file to realize dynamic functions such as conditional rendering. Be sure to pay attention to the server configuration and syntax correctness to avoid problems caused by short labels, quotation mark errors or omitted end labels. What are the best practices for writing clean and maintainable PHP code? Jun 24, 2025 am 12:53 AM The key to writing clean and easy-to-maintain PHP code lies in clear naming, following standards, reasonable structure, making good use of comments and testability. 1. Use clear variables, functions and class names, such as $userData and calculateTotalPrice(); 2. Follow the PSR-12 standard unified code style; 3. Split the code structure according to responsibilities, and organize it using MVC or Laravel-style catalogs; 4. Avoid noodles-style code and split the logic into small functions with a single responsibility; 5. Add comments at key points and write interface documents to clarify parameters, return values ??and exceptions; 6. Improve testability, adopt dependency injection, reduce global state and static methods. These practices improve code quality, collaboration efficiency and post-maintenance ease. How do I execute SQL queries using PHP? Jun 24, 2025 am 12:54 AM Yes,youcanrunSQLqueriesusingPHP,andtheprocessinvolveschoosingadatabaseextension,connectingtothedatabase,executingqueriessafely,andclosingconnectionswhendone.Todothis,firstchoosebetweenMySQLiorPDO,withPDObeingmoreflexibleduetosupportingmultipledatabas See all articles <td id="c4hac"></td><ol id="c4hac"><dfn id="c4hac"><kbd id="c4hac"></kbd></dfn></ol><td id="c4hac"></td><ol id="c4hac"></ol>
\n\n\n<\/head>\n \n\n<?php\n\/\/ 定義變量并設置為空值\n$nameErr = $emailErr = $websiteErr = \"\";\n$name = $email = $website = \"\";\n\nif ($_SERVER[\"REQUEST_METHOD\"] == \"POST\") {\n if (empty($_POST[\"name\"])) {\n $nameErr = \"姓名是必填的\";\n } else {\n $name = test_input($_POST[\"name\"]);\n \/\/ 檢查姓名是否包含字母和空白字符\n \/\/preg_match() 函數(shù)檢索字符串的模式，如果模式存在則返回 true，否則返回 false。\n if (!preg_match(\"\/^[a-zA-Z ]*$\/\",$name)) {\n $nameErr = \"只允許字母和空格\"; \n }\n }\n \n if (empty($_POST[\"email\"])) {\n $emailErr = \"電郵是必填的\";\n } else {\n $email = test_input($_POST[\"email\"]);\n \/\/ 檢查電子郵件地址語法是否有效\n if (!preg_match(\"\/([\\w\\-]+\\@[\\w\\-]+\\.[\\w\\-]+)\/\",$email)) {\n $emailErr = \"無效的 email 格式\"; \n }\n }\n \n if (empty($_POST[\"website\"])) {\n $website = \"\";\n } else {\n $website = test_input($_POST[\"website\"]);\n \/\/ 檢查 URL 地址語法是否有效（正則表達式也允許 URL 中的斜杠）\n if (!preg_match(\"\/\\b(?:(?:https?|ftp):\\\/\\\/|www\\.)[-a-z0-9+&@#\\\/%?=~_|!:,.;]*[-a-z0-9+&@#\\\/%=~_|]\/i\",$website)) {\n $websiteErr = \"無效的 URL\"; \n }\n }\n\n}\n\nfunction test_input($data) {\n \/\/去除用戶輸入數(shù)據(jù)中不必要的字符（多余的空格、制表符、換行）\n $data = trim($data);\n \/\/刪除用戶輸入數(shù)據(jù)中的反斜杠（\\）\n $data = stripslashes($data);\n \/\/把特殊字符轉換為 HTML 實體\n $data = htmlspecialchars($data);\n return $data;\n}\n?>\n\nPHP 驗證實例<\/h2>\n* 必需的字段<\/span><\/p>\n\n\"> \n \n 姓名：\">\n * <?php echo $nameErr;?><\/span>\n \n 郵箱：\">\n * <?php echo $emailErr;?><\/span>\n \n 網(wǎng)址：\">\n <?php echo $websiteErr;?><\/span>\n \n \n<\/form>\n\n<?php\necho \"您的輸入：<\/h2>\";\necho $name;\necho \"\";\necho $email;\necho \"\";\necho $website;\necho \"\";\n?>\n\n<\/body>\n<\/html>\n<\/pre>\n\nI hope this article will help you learn PHP programming. <\/p>\n\n\n\nArticles you may be interested in:<\/h4>\n\nRegular expressions commonly used for form validation in php<\/li>\nphp form validation implementation code<\/li>\nCommonly used in PHP development Summary of the use of the three form validation functions<\/li>\nHow to use the three PHP form validation functions ISSET(), empty(), and is_numeric()<\/li>\nphp tp validation form and autofill function code<\/li>\nDetailed explanation of form verification based on PHP Ajax<\/li>\nSpecific examples of using js for form verification on the PHP user registration page<\/li>\nThinkPHP form automatic submission verification example tutorial<\/li>\nThinkPHP Example of automatic form verification<\/li>\nthinkPHP implements automatic form verification<\/li>\n<\/ul>\n<\/p>\n\nhttp:\/\/www.bkjia.com\/PHPjc\/1105381.html<\/span>www.bkjia.com<\/span>true<\/span>http: \/\/www.bkjia.com\/PHPjc\/1105381.html<\/span>TechArticle<\/span>php programming must learn form verification every day, php programming form This article explains the implementation method of php form verification with examples, share For your reference, the specific content is as follows 1. PHP form processing w...<\/span>\n<\/div>\n<\/div>"} Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents PHP programming must learn form verification every day, PHP programming form Articles you may be interested in: Home Backend Development PHP Tutorial PHP programming must learn form validation every day, PHP programming form_PHP tutorial PHP programming must learn form validation every day, PHP programming form_PHP tutorial WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB Jul 12, 2016 am 08:58 AM php form PHP programming must learn form verification every day, PHP programming form This article explains the implementation method of PHP form verification through examples, and shares it with everyone for your reference. The specific content is as follows 1.PHP form processing welcome.html <html> <body> <form action="welcome.php" method="post"> Name: <input type="text" name="name"><br> E-mail: <input type="text" name="email"><br> <input type="submit"> </form> </body> </html> welcome.php <html> <body> <!--PHP 超全局變量 $_GET 和 $_POST 用于收集表單數(shù)據(jù)（form-data)--> Welcome <?php echo $_POST["name"]; ?><br> Your email address is: <?php echo $_POST["email"]; ?> </body> </html> 2. Complete example of PHP form verification <html> <head> </head> <body> <?php // 定義變量并設置為空值 $nameErr = $emailErr = $websiteErr = ""; $name = $email = $website = ""; if ($_SERVER["REQUEST_METHOD"] == "POST") { if (empty($_POST["name"])) { $nameErr = "姓名是必填的"; } else { $name = test_input($_POST["name"]); // 檢查姓名是否包含字母和空白字符 //preg_match() 函數(shù)檢索字符串的模式，如果模式存在則返回 true，否則返回 false。 if (!preg_match("/^[a-zA-Z ]*$/",$name)) { $nameErr = "只允許字母和空格"; } } if (empty($_POST["email"])) { $emailErr = "電郵是必填的"; } else { $email = test_input($_POST["email"]); // 檢查電子郵件地址語法是否有效 if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email)) { $emailErr = "無效的 email 格式"; } } if (empty($_POST["website"])) { $website = ""; } else { $website = test_input($_POST["website"]); // 檢查 URL 地址語法是否有效（正則表達式也允許 URL 中的斜杠） if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) { $websiteErr = "無效的 URL"; } } } function test_input($data) { //去除用戶輸入數(shù)據(jù)中不必要的字符（多余的空格、制表符、換行） $data = trim($data); //刪除用戶輸入數(shù)據(jù)中的反斜杠（\） $data = stripslashes($data); //把特殊字符轉換為 HTML 實體 $data = htmlspecialchars($data); return $data; } ?> <h2>PHP 驗證實例</h2> <p><span class="error">* 必需的字段</span></p> <!--htmlspecialchars() 函數(shù)把特殊字符轉換為 HTML 實體。--> <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>"> <!--value:保留表單中的值--> 姓名：<input type="text" name="name" value="<?php echo $name;?>"> <span class="error">* <?php echo $nameErr;?></span> <br><br> 郵箱：<input type="text" name="email" value="<?php echo $email;?>"> <span class="error">* <?php echo $emailErr;?></span> <br><br> 網(wǎng)址：<input type="text" name="website" value="<?php echo $website;?>"> <span class="error"><?php echo $websiteErr;?></span> <br><br> <input type="submit" name="submit" value="提交"> </form> <?php echo "<h2>您的輸入：</h2>"; echo $name; echo "<br>"; echo $email; echo "<br>"; echo $website; echo "<br>"; ?> </body> </html> I hope this article will help you learn PHP programming. Articles you may be interested in: Regular expressions commonly used for form validation in php php form validation implementation code Commonly used in PHP development Summary of the use of the three form validation functions How to use the three PHP form validation functions ISSET(), empty(), and is_numeric() php tp validation form and autofill function code Detailed explanation of form verification based on PHP Ajax Specific examples of using js for form verification on the PHP user registration page ThinkPHP form automatic submission verification example tutorial ThinkPHP Example of automatic form verification thinkPHP implements automatic form verification http://www.bkjia.com/PHPjc/1105381.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1105381.htmlTechArticlephp programming must learn form verification every day, php programming form This article explains the implementation method of php form verification with examples, share For your reference, the specific content is as follows 1. PHP form processing w... Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060533 fails to install in Windows 10? 3 weeks ago By DDD Dune: Awakening - Where To Get Insulated Fabric 3 weeks ago By Jack chen Gmail Login: How to Sign Up, Sign In, or Sign Out of Gmail - MiniTool 1 months ago By Jack chen How to fix KB5060999 fails to install in Windows 11? 3 weeks ago By DDD Guild Guide In Tainted Grail: The Fall Of Avalon 4 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8517 17 Java Tutorial 1742 16 CakePHP Tutorial 1596 56 Laravel Tutorial 1536 28 PHP Tutorial 1396 31 Show More Related knowledge How do I stay up-to-date with the latest PHP developments and best practices? Jun 23, 2025 am 12:56 AM TostaycurrentwithPHPdevelopmentsandbestpractices,followkeynewssourceslikePHP.netandPHPWeekly,engagewithcommunitiesonforumsandconferences,keeptoolingupdatedandgraduallyadoptnewfeatures,andreadorcontributetoopensourceprojects.First,followreliablesource What is PHP, and why is it used for web development? Jun 23, 2025 am 12:55 AM PHPbecamepopularforwebdevelopmentduetoitseaseoflearning,seamlessintegrationwithHTML,widespreadhostingsupport,andalargeecosystemincludingframeworkslikeLaravelandCMSplatformslikeWordPress.Itexcelsinhandlingformsubmissions,managingusersessions,interacti How to set PHP time zone? Jun 25, 2025 am 01:00 AM TosettherighttimezoneinPHP,usedate_default_timezone_set()functionatthestartofyourscriptwithavalididentifiersuchas'America/New_York'.1.Usedate_default_timezone_set()beforeanydate/timefunctions.2.Alternatively,configurethephp.inifilebysettingdate.timez How do I validate user input in PHP to ensure it meets certain criteria? Jun 22, 2025 am 01:00 AM TovalidateuserinputinPHP,usebuilt-invalidationfunctionslikefilter_var()andfilter_input(),applyregularexpressionsforcustomformatssuchasusernamesorphonenumbers,checkdatatypesfornumericvalueslikeageorprice,setlengthlimitsandtrimwhitespacetopreventlayout What is data serialization in PHP (serialize(), unserialize())? Jun 22, 2025 am 01:03 AM ThePhpfunctionSerialize () andunserialize () AreusedtoconvertcomplexdaTastructdestoresintostoraSandaBackagain.1.Serialize () c OnvertsdatalikecarraysorobjectsraystringcontainingTypeandstructureinformation.2.unserialize () Reconstruct theoriginalatataprom How do I embed PHP code in an HTML file? Jun 22, 2025 am 01:00 AM You can embed PHP code into HTML files, but make sure that the file has an extension of .php so that the server can parse it correctly. Use standard tags to wrap PHP code, insert dynamic content anywhere in HTML. In addition, you can switch PHP and HTML multiple times in the same file to realize dynamic functions such as conditional rendering. Be sure to pay attention to the server configuration and syntax correctness to avoid problems caused by short labels, quotation mark errors or omitted end labels. What are the best practices for writing clean and maintainable PHP code? Jun 24, 2025 am 12:53 AM The key to writing clean and easy-to-maintain PHP code lies in clear naming, following standards, reasonable structure, making good use of comments and testability. 1. Use clear variables, functions and class names, such as $userData and calculateTotalPrice(); 2. Follow the PSR-12 standard unified code style; 3. Split the code structure according to responsibilities, and organize it using MVC or Laravel-style catalogs; 4. Avoid noodles-style code and split the logic into small functions with a single responsibility; 5. Add comments at key points and write interface documents to clarify parameters, return values ??and exceptions; 6. Improve testability, adopt dependency injection, reduce global state and static methods. These practices improve code quality, collaboration efficiency and post-maintenance ease. How do I execute SQL queries using PHP? Jun 24, 2025 am 12:54 AM Yes,youcanrunSQLqueriesusingPHP,andtheprocessinvolveschoosingadatabaseextension,connectingtothedatabase,executingqueriessafely,andclosingconnectionswhendone.Todothis,firstchoosebetweenMySQLiorPDO,withPDObeingmoreflexibleduetosupportingmultipledatabas See all articles <td id="c4hac"></td><ol id="c4hac"><dfn id="c4hac"><kbd id="c4hac"></kbd></dfn></ol><td id="c4hac"></td><ol id="c4hac"></ol>
* 必需的字段<\/span><\/p>\n\n\"> \n \n 姓名：\">\n * <?php echo $nameErr;?><\/span>\n \n 郵箱：\">\n * <?php echo $emailErr;?><\/span>\n \n 網(wǎng)址：\">\n <?php echo $websiteErr;?><\/span>\n \n \n<\/form>\n\n<?php\necho \"您的輸入：<\/h2>\";\necho $name;\necho \"\";\necho $email;\necho \"\";\necho $website;\necho \"\";\n?>\n\n<\/body>\n<\/html>\n<\/pre>\n\nI hope this article will help you learn PHP programming. <\/p>\n\n\n\nArticles you may be interested in:<\/h4>\n\nRegular expressions commonly used for form validation in php<\/li>\nphp form validation implementation code<\/li>\nCommonly used in PHP development Summary of the use of the three form validation functions<\/li>\nHow to use the three PHP form validation functions ISSET(), empty(), and is_numeric()<\/li>\nphp tp validation form and autofill function code<\/li>\nDetailed explanation of form verification based on PHP Ajax<\/li>\nSpecific examples of using js for form verification on the PHP user registration page<\/li>\nThinkPHP form automatic submission verification example tutorial<\/li>\nThinkPHP Example of automatic form verification<\/li>\nthinkPHP implements automatic form verification<\/li>\n<\/ul>\n<\/p>\n\nhttp:\/\/www.bkjia.com\/PHPjc\/1105381.html<\/span>www.bkjia.com<\/span>true<\/span>http: \/\/www.bkjia.com\/PHPjc\/1105381.html<\/span>TechArticle<\/span>php programming must learn form verification every day, php programming form This article explains the implementation method of php form verification with examples, share For your reference, the specific content is as follows 1. PHP form processing w...<\/span>\n<\/div>\n<\/div>"} Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents PHP programming must learn form verification every day, PHP programming form Articles you may be interested in: Home Backend Development PHP Tutorial PHP programming must learn form validation every day, PHP programming form_PHP tutorial PHP programming must learn form validation every day, PHP programming form_PHP tutorial WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB Jul 12, 2016 am 08:58 AM php form PHP programming must learn form verification every day, PHP programming form This article explains the implementation method of PHP form verification through examples, and shares it with everyone for your reference. The specific content is as follows 1.PHP form processing welcome.html <html> <body> <form action="welcome.php" method="post"> Name: <input type="text" name="name"><br> E-mail: <input type="text" name="email"><br> <input type="submit"> </form> </body> </html> welcome.php <html> <body> <!--PHP 超全局變量 $_GET 和 $_POST 用于收集表單數(shù)據(jù)（form-data)--> Welcome <?php echo $_POST["name"]; ?><br> Your email address is: <?php echo $_POST["email"]; ?> </body> </html> 2. Complete example of PHP form verification <html> <head> </head> <body> <?php // 定義變量并設置為空值 $nameErr = $emailErr = $websiteErr = ""; $name = $email = $website = ""; if ($_SERVER["REQUEST_METHOD"] == "POST") { if (empty($_POST["name"])) { $nameErr = "姓名是必填的"; } else { $name = test_input($_POST["name"]); // 檢查姓名是否包含字母和空白字符 //preg_match() 函數(shù)檢索字符串的模式，如果模式存在則返回 true，否則返回 false。 if (!preg_match("/^[a-zA-Z ]*$/",$name)) { $nameErr = "只允許字母和空格"; } } if (empty($_POST["email"])) { $emailErr = "電郵是必填的"; } else { $email = test_input($_POST["email"]); // 檢查電子郵件地址語法是否有效 if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email)) { $emailErr = "無效的 email 格式"; } } if (empty($_POST["website"])) { $website = ""; } else { $website = test_input($_POST["website"]); // 檢查 URL 地址語法是否有效（正則表達式也允許 URL 中的斜杠） if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) { $websiteErr = "無效的 URL"; } } } function test_input($data) { //去除用戶輸入數(shù)據(jù)中不必要的字符（多余的空格、制表符、換行） $data = trim($data); //刪除用戶輸入數(shù)據(jù)中的反斜杠（\） $data = stripslashes($data); //把特殊字符轉換為 HTML 實體 $data = htmlspecialchars($data); return $data; } ?> <h2>PHP 驗證實例</h2> <p><span class="error">* 必需的字段</span></p> <!--htmlspecialchars() 函數(shù)把特殊字符轉換為 HTML 實體。--> <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>"> <!--value:保留表單中的值--> 姓名：<input type="text" name="name" value="<?php echo $name;?>"> <span class="error">* <?php echo $nameErr;?></span> <br><br> 郵箱：<input type="text" name="email" value="<?php echo $email;?>"> <span class="error">* <?php echo $emailErr;?></span> <br><br> 網(wǎng)址：<input type="text" name="website" value="<?php echo $website;?>"> <span class="error"><?php echo $websiteErr;?></span> <br><br> <input type="submit" name="submit" value="提交"> </form> <?php echo "<h2>您的輸入：</h2>"; echo $name; echo "<br>"; echo $email; echo "<br>"; echo $website; echo "<br>"; ?> </body> </html> I hope this article will help you learn PHP programming. Articles you may be interested in: Regular expressions commonly used for form validation in php php form validation implementation code Commonly used in PHP development Summary of the use of the three form validation functions How to use the three PHP form validation functions ISSET(), empty(), and is_numeric() php tp validation form and autofill function code Detailed explanation of form verification based on PHP Ajax Specific examples of using js for form verification on the PHP user registration page ThinkPHP form automatic submission verification example tutorial ThinkPHP Example of automatic form verification thinkPHP implements automatic form verification http://www.bkjia.com/PHPjc/1105381.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1105381.htmlTechArticlephp programming must learn form verification every day, php programming form This article explains the implementation method of php form verification with examples, share For your reference, the specific content is as follows 1. PHP form processing w... Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060533 fails to install in Windows 10? 3 weeks ago By DDD Dune: Awakening - Where To Get Insulated Fabric 3 weeks ago By Jack chen Gmail Login: How to Sign Up, Sign In, or Sign Out of Gmail - MiniTool 1 months ago By Jack chen How to fix KB5060999 fails to install in Windows 11? 3 weeks ago By DDD Guild Guide In Tainted Grail: The Fall Of Avalon 4 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8517 17 Java Tutorial 1742 16 CakePHP Tutorial 1596 56 Laravel Tutorial 1536 28 PHP Tutorial 1396 31 Show More Related knowledge How do I stay up-to-date with the latest PHP developments and best practices? Jun 23, 2025 am 12:56 AM TostaycurrentwithPHPdevelopmentsandbestpractices,followkeynewssourceslikePHP.netandPHPWeekly,engagewithcommunitiesonforumsandconferences,keeptoolingupdatedandgraduallyadoptnewfeatures,andreadorcontributetoopensourceprojects.First,followreliablesource What is PHP, and why is it used for web development? Jun 23, 2025 am 12:55 AM PHPbecamepopularforwebdevelopmentduetoitseaseoflearning,seamlessintegrationwithHTML,widespreadhostingsupport,andalargeecosystemincludingframeworkslikeLaravelandCMSplatformslikeWordPress.Itexcelsinhandlingformsubmissions,managingusersessions,interacti How to set PHP time zone? Jun 25, 2025 am 01:00 AM TosettherighttimezoneinPHP,usedate_default_timezone_set()functionatthestartofyourscriptwithavalididentifiersuchas'America/New_York'.1.Usedate_default_timezone_set()beforeanydate/timefunctions.2.Alternatively,configurethephp.inifilebysettingdate.timez How do I validate user input in PHP to ensure it meets certain criteria? Jun 22, 2025 am 01:00 AM TovalidateuserinputinPHP,usebuilt-invalidationfunctionslikefilter_var()andfilter_input(),applyregularexpressionsforcustomformatssuchasusernamesorphonenumbers,checkdatatypesfornumericvalueslikeageorprice,setlengthlimitsandtrimwhitespacetopreventlayout What is data serialization in PHP (serialize(), unserialize())? Jun 22, 2025 am 01:03 AM ThePhpfunctionSerialize () andunserialize () AreusedtoconvertcomplexdaTastructdestoresintostoraSandaBackagain.1.Serialize () c OnvertsdatalikecarraysorobjectsraystringcontainingTypeandstructureinformation.2.unserialize () Reconstruct theoriginalatataprom How do I embed PHP code in an HTML file? Jun 22, 2025 am 01:00 AM You can embed PHP code into HTML files, but make sure that the file has an extension of .php so that the server can parse it correctly. Use standard tags to wrap PHP code, insert dynamic content anywhere in HTML. In addition, you can switch PHP and HTML multiple times in the same file to realize dynamic functions such as conditional rendering. Be sure to pay attention to the server configuration and syntax correctness to avoid problems caused by short labels, quotation mark errors or omitted end labels. What are the best practices for writing clean and maintainable PHP code? Jun 24, 2025 am 12:53 AM The key to writing clean and easy-to-maintain PHP code lies in clear naming, following standards, reasonable structure, making good use of comments and testability. 1. Use clear variables, functions and class names, such as $userData and calculateTotalPrice(); 2. Follow the PSR-12 standard unified code style; 3. Split the code structure according to responsibilities, and organize it using MVC or Laravel-style catalogs; 4. Avoid noodles-style code and split the logic into small functions with a single responsibility; 5. Add comments at key points and write interface documents to clarify parameters, return values ??and exceptions; 6. Improve testability, adopt dependency injection, reduce global state and static methods. These practices improve code quality, collaboration efficiency and post-maintenance ease. How do I execute SQL queries using PHP? Jun 24, 2025 am 12:54 AM Yes,youcanrunSQLqueriesusingPHP,andtheprocessinvolveschoosingadatabaseextension,connectingtothedatabase,executingqueriessafely,andclosingconnectionswhendone.Todothis,firstchoosebetweenMySQLiorPDO,withPDObeingmoreflexibleduetosupportingmultipledatabas See all articles <td id="c4hac"></td><ol id="c4hac"><dfn id="c4hac"><kbd id="c4hac"></kbd></dfn></ol><td id="c4hac"></td><ol id="c4hac"></ol>
I hope this article will help you learn PHP programming. <\/p>\n\n\n\n
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This article explains the implementation method of PHP form verification through examples, and shares it with everyone for your reference. The specific content is as follows
1.PHP form processing welcome.html
<html> <body> <form action="welcome.php" method="post"> Name: <input type="text" name="name"><br> E-mail: <input type="text" name="email"><br> <input type="submit"> </form> </body> </html>
welcome.php
<html> <body> <!--PHP 超全局變量 $_GET 和 $_POST 用于收集表單數(shù)據(jù)（form-data)--> Welcome <?php echo $_POST["name"]; ?><br> Your email address is: <?php echo $_POST["email"]; ?> </body> </html>
2. Complete example of PHP form verification
<html> <head> </head> <body> <?php // 定義變量并設置為空值 $nameErr = $emailErr = $websiteErr = ""; $name = $email = $website = ""; if ($_SERVER["REQUEST_METHOD"] == "POST") { if (empty($_POST["name"])) { $nameErr = "姓名是必填的"; } else { $name = test_input($_POST["name"]); // 檢查姓名是否包含字母和空白字符 //preg_match() 函數(shù)檢索字符串的模式，如果模式存在則返回 true，否則返回 false。 if (!preg_match("/^[a-zA-Z ]*$/",$name)) { $nameErr = "只允許字母和空格"; } } if (empty($_POST["email"])) { $emailErr = "電郵是必填的"; } else { $email = test_input($_POST["email"]); // 檢查電子郵件地址語法是否有效 if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email)) { $emailErr = "無效的 email 格式"; } } if (empty($_POST["website"])) { $website = ""; } else { $website = test_input($_POST["website"]); // 檢查 URL 地址語法是否有效（正則表達式也允許 URL 中的斜杠） if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) { $websiteErr = "無效的 URL"; } } } function test_input($data) { //去除用戶輸入數(shù)據(jù)中不必要的字符（多余的空格、制表符、換行） $data = trim($data); //刪除用戶輸入數(shù)據(jù)中的反斜杠（\） $data = stripslashes($data); //把特殊字符轉換為 HTML 實體 $data = htmlspecialchars($data); return $data; } ?> <h2>PHP 驗證實例</h2> <p><span class="error">* 必需的字段</span></p> <!--htmlspecialchars() 函數(shù)把特殊字符轉換為 HTML 實體。--> <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>"> <!--value:保留表單中的值--> 姓名：<input type="text" name="name" value="<?php echo $name;?>"> <span class="error">* <?php echo $nameErr;?></span> <br><br> 郵箱：<input type="text" name="email" value="<?php echo $email;?>"> <span class="error">* <?php echo $emailErr;?></span> <br><br> 網(wǎng)址：<input type="text" name="website" value="<?php echo $website;?>"> <span class="error"><?php echo $websiteErr;?></span> <br><br> <input type="submit" name="submit" value="提交"> </form> <?php echo "<h2>您的輸入：</h2>"; echo $name; echo "<br>"; echo $email; echo "<br>"; echo $website; echo "<br>"; ?> </body> </html>
I hope this article will help you learn PHP programming.
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TostaycurrentwithPHPdevelopmentsandbestpractices,followkeynewssourceslikePHP.netandPHPWeekly,engagewithcommunitiesonforumsandconferences,keeptoolingupdatedandgraduallyadoptnewfeatures,andreadorcontributetoopensourceprojects.First,followreliablesource
PHPbecamepopularforwebdevelopmentduetoitseaseoflearning,seamlessintegrationwithHTML,widespreadhostingsupport,andalargeecosystemincludingframeworkslikeLaravelandCMSplatformslikeWordPress.Itexcelsinhandlingformsubmissions,managingusersessions,interacti
TosettherighttimezoneinPHP,usedate_default_timezone_set()functionatthestartofyourscriptwithavalididentifiersuchas'America/New_York'.1.Usedate_default_timezone_set()beforeanydate/timefunctions.2.Alternatively,configurethephp.inifilebysettingdate.timez
TovalidateuserinputinPHP,usebuilt-invalidationfunctionslikefilter_var()andfilter_input(),applyregularexpressionsforcustomformatssuchasusernamesorphonenumbers,checkdatatypesfornumericvalueslikeageorprice,setlengthlimitsandtrimwhitespacetopreventlayout
ThePhpfunctionSerialize () andunserialize () AreusedtoconvertcomplexdaTastructdestoresintostoraSandaBackagain.1.Serialize () c OnvertsdatalikecarraysorobjectsraystringcontainingTypeandstructureinformation.2.unserialize () Reconstruct theoriginalatataprom
You can embed PHP code into HTML files, but make sure that the file has an extension of .php so that the server can parse it correctly. Use standard tags to wrap PHP code, insert dynamic content anywhere in HTML. In addition, you can switch PHP and HTML multiple times in the same file to realize dynamic functions such as conditional rendering. Be sure to pay attention to the server configuration and syntax correctness to avoid problems caused by short labels, quotation mark errors or omitted end labels.
The key to writing clean and easy-to-maintain PHP code lies in clear naming, following standards, reasonable structure, making good use of comments and testability. 1. Use clear variables, functions and class names, such as $userData and calculateTotalPrice(); 2. Follow the PSR-12 standard unified code style; 3. Split the code structure according to responsibilities, and organize it using MVC or Laravel-style catalogs; 4. Avoid noodles-style code and split the logic into small functions with a single responsibility; 5. Add comments at key points and write interface documents to clarify parameters, return values ??and exceptions; 6. Improve testability, adopt dependency injection, reduce global state and static methods. These practices improve code quality, collaboration efficiency and post-maintenance ease.
Yes,youcanrunSQLqueriesusingPHP,andtheprocessinvolveschoosingadatabaseextension,connectingtothedatabase,executingqueriessafely,andclosingconnectionswhendone.Todothis,firstchoosebetweenMySQLiorPDO,withPDObeingmoreflexibleduetosupportingmultipledatabas