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In php, the class name::class, what does it mean?

I would like to ask: In the following PHP code, what does the class name::class mean? {code...}

曾經(jīng)蠟筆沒有小新 2017-06-30 09:54:29 0  2  1000

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

Does anyone know where Jingshui Brother Shui has a PHP class?

Who knows where Brother Shui in Jingshui has a PHP class? Who knows where Brother Shui in Jingshui has a PHP class?

A0五花牛 2020-10-10 00:54:44 0  1  1212

PHP class attribute declaration?

<?php class Image{     private $path;     public function __construct($path = './'){      &nb

A _ Ｑ _ｉ_ 2021-10-17 22:05:54 0  7  1028

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

How to get the constructor class name of the passed in object in PHP?

Suppose I have the following class structure: classLogger{publicfunction__construct(string$channel){//Logger initialization work}}classUsingLogger{privateLogger$logger;publicfunction__construct(Logger$logger){$this->logger=$logger;}}$logger =newLog

P粉413307845 2023-09-11 11:23:19 0  1  692

When inserting data encapsulated by the PHP class, the insertion is always unsuccessful and false is returned;

<?php //Database operation class class Model{ Private $host; //Database address Private $user; //Database username Private $pwd; /

A _ Ｑ _ｉ_ 2021-10-13 10:21:27 0  6  1132

class - How does PHP implement that all subclass attributes have toArray() method?

How to implement in PHP that all properties of subclasses have toArray() method? After the call, it becomes an array. How to design the parent class? ?

阿神 2017-05-16 12:59:22 0  3  662

php string comparison

When I used PHP for string comparison, I encountered a pit, as shown in the code: {Code...} The first result is true, and the second result is false. After looking through the official documents, if the first one is forced to be converted to the number 0, then the second one should be forced to be c...

typecho 2017-06-16 09:18:38 0  4  1077

PHP warning: cannot convert array to string

I have this code in my file: if(is_array($_REQUEST))$cepl=implode('',$_REQUEST); Every few days I get the following warning in the php log: PHP warning: in / Line 76 of file.php, converting the array into a string, line 76 is: $cepl=implode('',$_REQUEST); I can't figure out what caused this warning?...

P粉101708623 2023-08-15 22:27:37 0  1  621

PHP - Traversing object fails if element's value is not of type string

I have a simple question, but no matter what, I can't figure out what's going on. I have a JSON string that looks like this: {"network_title":"Network","class_title":"Class","grades":[{"number":"Pre-K",&quo

P粉769045426 2023-07-30 18:07:04 0  1  627

How to create a string equivalent to yyyyMMddHHmmssffff in PHP?

I'm trying to integrate with some VB code that generates a string using DateTime.Now.ToString("yyyyMMddHHmmssffff"). In PHP, the closest I can get is using date('YmdHis'). But this is missing the millisecond part. I have tried using microtime, such as date('YmdHis', microtime(true)), and t...

P粉238355860 2023-07-31 12:10:17 0  1  932

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(xí)慣沉默 2017-05-16 13:10:23 0  2  566

How to convert json string to json object in php

Looking for a writing method similar to msg = eval('(' + msg + ')'); in js. Currently, it is known that php uses json_decode() for string json and returns null. Baidu does not have other methods.

代言 2017-06-30 09:56:25 0  2  1019

PHP array How to elegantly convert 1,2,4,5,6,7,9,11 into a string like '1,2,4-7,9,11'?

For example, if there is a php array {code...} that can be elegantly converted into a string like {code...}? Thank you for your answer.

過去多啦不再A夢 2017-06-05 11:07:46 0  2  747

Fatal error occurs in the test database: Class 'think\Controller' not found in C:\php\WWW\t\application\admins\controller\Test.php on line 8

Fatal error: Class 'think\Controller' not found in C:\php\WWW\t\application\admins\controller\Test.php on line 8 There is no foundation at all... the PHP integrated environment used

有宏陸 2019-06-17 17:24:09 0  2  1983

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

Preview of the teaching course on September 10, 2018: How to implement paging query data table and classification query for class encapsulation in PHP

Preview of the teaching content of the third online class of PHP Chinese website on September 10, 2018: 1. Teaching topic: How to use PHP to implement paging query data tables? Encapsulate classification queries into classes to achieve code reuse. For more detailed knowledge points, please pay atten...

藏色散人 2018-09-10 10:02:37 0  0  1376

serializers - The data passed by ajax is a serialized string, why does php accept it as an array?

Front-end code: if(register_flag){ //The registration information is correct {code...} php code require 'config.php'; {code...} The error reported here says that the second parameter of explode() should be of type string , but what I wear is an array type. The data passed by ajax is of string type.....

伊謝爾倫 2017-05-16 13:00:09 0  4  1079

Java's [EncryptUtill.java encryption class, what does it correspond to PHP? I found a few on the Internet, but after encryption, they can't match those of Java.

Java's [EncryptUtill.java encryption class, what does it correspond to PHP? I found a few on the Internet, but after encryption, they can’t match those of Java.

巴扎黑 2017-06-20 10:07:34 0  2  919