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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  1319

Reworded title: Why doesn't PHP handle "class not found" errors?

In the example below, I want to catch the error and create a Null class if the class does not exist. But despite my try/catch statements, PHP just tells me that the 'SmartFormasdfasdf' class is not found. How to get PHP to catch "class not found" errors? <?phpclassSmartFormLoginextendsS...

P粉475126941 2024-01-03 19:53:41 0  2  634

PHP refers to the Prince class, and the page prompts that the PDF cannot be loaded.

<?phprequire 'prince.php';//print_r() ;//exit();$prince = new Prince('D:\\prince\\engine\\bin\\prince.exe');//$prince = new Prince('D:\prince\engine\bin\prince.exe');header(

思展軟件 2019-10-16 10:57:38 0  2  1248

The oci_parse() method returns null parsing method

I want to create a class that connects to an ORACLE database using some OCI methods. But when I call the Parse() method it is null and my FetchArray() method returns nothing Database PHP class: classDatabase{/***@varstring*/privatestring$login;/***@varstring*/ privatestring$password;/***@varstring*/...

P粉043432210 2024-01-29 13:46:11 0  1  695

php - How to add methods to an instance?

{Code...} If there is already an instance of class A, how can this instance also use the test method? What should I do if class A cannot be modified in php and python? If possible, use other packages when writing php before. , you will encounter that the call result returned is already an instance o...

某草草 2017-06-29 10:07:59 0  2  935

How to embed php in HTML attribute?

For example, I have a page that mixes php and html. The php part stores a variable: {code...} In HTML, I want to use this variable in the attribute of an element: {code...} For example, here I I want to make the value of the class of this div active, which is just stored in the $class variable in ph...

曾經(jīng)蠟筆沒有小新 2017-05-24 11:34:16 0  1  761

php advanced path

I have been working in PHP for more than two years and have been responsible for the company's backend maintenance. I have developed two projects based on tp5.1. I still use one-click to generate the backend framework FastAdmin. I feel that there is no progress. Now I want to learn PHP in depth, so ...

Mind 2019-11-28 11:38:41 0  2  1339

Why do PDO and PDOStatement exist at the same time? What are the considerations for this design?

Problem description: We all know that since PHP 5.1.0, PDO has been a standard part of PHP. PDO provides three classes: PDO, PDOStatement and PDOException. Needless to say, the PDOException class depends on its name for function and positioning. It's all clear. So the question comes: why at the same...

我想大聲告訴你 2017-05-16 13:11:25 0  3  867

Official team, please solve the bug

I use PHP version 5.4 of the PHP toolbox, and the verification code can be displayed, but it cannot be displayed when I switch to PHP version 5.6 or 7. What I tested was the verification code class that comes with the tp5 framework. What's going on?

冷笑淺兮 2017-11-12 23:08:40 0  3  1024

Beautifying URLs in PHP frameworks

I know you can add rules in htaccess, but I found that PHP frameworks don't do that and somehow you still have beautiful URLs. How can servers do this if they don't know the URL rules? I've been looking for Yii's url manager class but I don't understand how it's done.

P粉176980522 2023-10-30 09:40:09 0  1  890

How to make methods under classes automatically complete in sublime?

I now use the sublime editor as a PHP learning and development tool. When I followed the study, I found that when Teacher Zhu entered the getLastInsID method under the Db class, he only needed to enter get and 3 Db class containing get would be brought out. method, and then quickly select one of the...

Binbin(斌斌老師) 2019-03-28 13:08:49 0  2  1073

After cross-class call, method cannot be found

Do static method overloading to achieve chained access to the database exercise demo5.php references the Query.php class and then accesses the method in Query. The page prompts me that the method 'table' is not found in the Database. The following is the source code. I hope it can help. The first er...

方人胥 2021-06-12 17:16:18 1  2  1201

How to handle Uncaught Error: PHP/Composer class not found?

I'm starting a project with oop as a beginner and I'm trying to use some classes that I think will be recognized by vscode and composer because when I click on their namespace it directs me to the correct class, but when When I run the code in the browser I get a fatal error telling me that my class...

P粉304704653 2023-09-04 13:46:14 0  1  634

JS jump to PHP page stuck

The JS jump to other PHP pages is stuck. I tested it and found that the empty PHP file can be accessed. There must be something wrong with the PHP code I was accessing. I can't jump with the JS code, but I can use the PHP header. It jumps normally, which is really weird. I would like to ask how to w...

按鍵盤手指磨破皮 2017-08-01 14:18:16 0  2  1606

PHP remove orientation exif from image only (without using imagick)

I wrote a script that batch resizes uploaded images locally and creates thumbnails. The problem is if some images are oriented vertically but after resizing they rotate horizontally. This is due to the exif orientation of the image. Is there an easy way to remove orientation exif from an image via P...

P粉141925181 2024-03-27 09:27:01 0  1  613

PHP method that returns interface instance into array

I have a small question that I can't find an answer to on the internet and I'm not really sure how php and the interface work. So the problem is I have an if(!variableinstanceofclass). But here, the class being checked is an interface and should be in an array, you can see in the following code abst...

P粉488464731 2023-09-01 13:40:43 0  1  663

Adding cookie header causes request to hang

I'm working on a class project where we need to write a website using php. We were told that we should write separate pages to query information and the php session for saving variables. I have successfully started a session, but when I try to make a request and add headers for the session, the requ...

P粉897881626 2023-09-15 21:20:14 0  1  753

After the underlying device C language RC4 is encrypted, why can't Java use rc4 to decrypt, but other people's PHP programs can decrypt successfully?

The underlying device is a wifi probe that regularly pushes data to a service. This service address receives the data and uses rc4 to decrypt it. The underlying device rc4 encryption is written in C language. java receiving program {code...} java rc4 decryption program: public class RC4 { {code...} ...

PHP中文網(wǎng) 2017-06-17 09:15:15 0  1  1392

What is the difference between PHP class declaration and instantiation?

I am a newbie. I found that many tool classes can be used by directly declaring them. For example, {code...} in laravel makes me confused. Does declaring a class variable instantiate the code? After searching on Baidu, no one asked about this issue in PHP language, only Java, and Java is like this.....

習慣沉默 2017-05-16 13:10:23 0  2  566

How to write in PHP to log in to different pages with different usernames and passwords

As a novice, I originally imagined that when adding a user, I would select the value of value, enter the username and password when logging in, and at the same time determine whether the value of the selected value is 0 or 1. When entering different pages, the name of value saved in the database is ...

TimeLimit 2018-06-17 13:51:17 0  1  1432