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Class initialization problem

Initialization of a class means that a class file of the class is generated, right?

P粉477414213 2022-11-19 12:50:45 0  0  872

class shared variable problem

For example, I have a class that has a static global variable a; it can also be non-static and then there is 1.php to assign the value of a to the class variable a to 88888; there is also 2.php how to get the variable of class a; Three different files, class, 1.php, 2.php

脾氣超好 2019-09-03 23:33:27 0  1  1321

How does a PHP static method call a non-static method of the parent class?

1. this calls the parent class method: 2. self calls the parent class method: 3. parent calls the parent class method: Is there no way for a subclass static method to call a parent class non-static method?

淡淡煙草味 2017-06-08 11:01:40 0  5  1221

php - How to use public public methods and public static static public methods in a class?

When to use public function xxxx in a class? When to use public static function xxx? When writing classes, I usually use public function xxxx. Because I don’t understand public static function xxx very well, I have never used it. Please know. of...

天蓬老師 2017-05-16 13:15:33 0  2  1020

Why can PHP directly call non-static methods of a class through ::?

The code is as follows: {code...} php7.0 execution output: {code...} php5.6 execution output {code...} Is there such an operation?? What is the principle??

滿天的星座 2017-06-10 09:47:28 0  7  651

Will calling a static method directly using the class name in PHP trigger the constructor of the class or parent class?

As the title says, PHP calls static methods directly using the class name. Two questions: 1. Will the constructor of the current class be called? 2 Will the constructor of the parent class of the current class be called?

淡淡煙草味 2017-07-07 10:34:10 0  3  1554

How to pass the value of a generated button from one PHP file to another?

I want to pass the id value of the PHP generated button from theory.php file to theory1.php file. The code is as follows: //theory.phpfilerequire('components/db.php');$query="SELECT*FROM`courses`";$result=mysqli_query($connect,$query)ordie("Error:".m

P粉155832941 2023-09-14 21:00:35 0  1  678

How to manage inclusions, requirements, and usage in this project

In this PHP project without framework I have this folder structure: adapters, classes and models php file "index.php" is executed from the root directory and I have a problem with model and adapter classes index file <?phpinclude ('Class/Load.php');$connection=MysqlClass::getConnectionM...

P粉652495194 2024-02-25 18:11:04 0  1  492

A Class is clearly created, but when referenced in another php file, it prompts class not found!

錯誤提示： Fatal error: Uncaught Error: Class 'frameworkdbMysqli' not found in C:Users11500DesktopdemoProjecttestTest.php:7 Stack trace: #0 {main} thrown in C:Users11500DesktopdemoProjecttestTest.p...

世界只因有你 2017-06-16 09:18:31 0  3  1031

Help from a newbie: About the loop that generates static lists in PHP

Let me ask you guys, PHP generates a static list. After the loop, the database value is normal, but the generated html data keeps repeating the data of the first loop. for ($i=0; $i < $allpages; $i++){ if ($i==0) { $indexpath = "index_0.html";&nbsp

°無恙。 2019-05-22 18:00:06 0  1  1137

centos7 - nginx server configuration problem

There is an existing PHP website on the server, which can be accessed normally. Now we need to add a static site, which cannot be accessed after configuring the virtual host... nginx.conf configuration file: {Code...} Original PHP project configuration file: {Code. ..} New virtual host configuration...

某草草 2017-05-16 17:09:09 0  6  625

How can I make a form resize error if the file already exists, preventing the file from being edited or overwritten?

How can I make a form resize error to prevent the file from being edited or overwritten if the file already exists? I'm not sure how to edit this code to readjust the error to prevent the file from being edited or overwritten if the file already exists. <?phpif($_POST["potus"]||$_POST[&...

P粉949848849 2023-09-13 22:06:46 0  1  753

Have you ever encountered problems such as downloading class library 500?

Recently, I downloaded some class libraries from the PHP Chinese website. Either there is no such file or the error code is 500. Is it a problem with my website or something else I can’t figure out! ! ! ! ! !

phpcn_u31624 2017-09-22 18:12:27 0  1  1121

Convert file to data stream

Hello heroes, I want to convert the excel file into a data stream and then send it to the interface. .NET uses this class to implement FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read); What method does PHP use to implement it? grateful.

聶順順 2022-10-25 09:17:59 0  5  1078

php 5.6 include php file directly outputs the file content without execution, and php5.2 will be normal.

As shown in the figure, the code for executing the file is as shown below. . . . As a result, the code in dbConfig.php is output directly to the browser. No analysis at all. Copy the code in dbConfig.php to the running php file. It is estimated that version 5.6 has upgraded the initialization and ex...

yoyo 2019-06-07 00:44:09 0  1  1250

How to import the contents of RTF format files into the editor in PHP?

The new function needs to extract the content from the RTF format file and put it into the input box of the unavailable input tag, as shown in the following figure. How to implement this function? Is there a method class in PHP to obtain it? .

北城浮生ぅ 2017-12-09 10:49:49 0  0  1185

Ask: Why can't the ajax submitted data be transmitted to the controller?

When I was studying the "Latest ThinkPHP 5.1 World Premiere Video Tutorial (60 Days to Become a PHP Master Online ** Class)" by teacher Peter.zhu, in the section "10-3 Preliminary Implementation of User Registration Function", why Why can't my ajax submission data be passed to th...

清晨的粥 2019-09-18 14:26:09 0  3  1358

How to disable PHP reporting SQL errors?

I have my own PHP data class that logs MySQL errors to a txt file using mysqli_error($this->conn). Everything was working fine until I set PHP error handling to E_ALL. Now PHP intercepts the error and it doesn't have a chance to be handled by my MySQL error handler. This wouldn't be a problem exc...

P粉550257856 2023-09-05 17:14:24 0  1  796

Is it possible to read and display the contents of a txt file every few seconds using HTML?

I have a txt file that is updated with new data every few seconds. It is stored and generated on the Raspberry Pi, which will also act as a server. I wish to add its content to the html code for display. It should update without manually reloading the page. Is there a way to do this? Maybe use AJAX,...

P粉529581199 2023-09-07 08:46:12 0  2  765

How to get openid after scanning the QR code image generated with PHP?

I used the PHP QR code generation class library to generate a QR code picture (not generated by the WeChat interface). I want to get the openid of a WeChat user after scanning the QR code. How can I implement this function? (I previously thought of using web page authorization to achieve this, but t...

LRTRL 2017-06-28 16:57:44 0  1  2148