magic trackpad

First, the Magic function(13)1, __construct ()Called when an object is instantiated, and when __construct and a function with the name of the class name are present, __construct is called and the other is not called.2, __destruct ()Called when an object is deleted or when an object operation terminates.3, __call ()The object calls a method, and if the method exists, it is called directly; if it does not exist, it will call the __call function.4, __get

First, the Magic function(13)1, __construct ()Called when an object is instantiated, and when __construct and a function with the name of the class name are present, __construct is called and the other is not called.2, __destruct ()Called when an object is deleted or when an object operation terminates.3, __call ()The object calls a method, and if the method exists, it is called directly; if it does not exist, it will call the __call function.4, __get

Magic Method __callPHP//file name: index.phpDefine(' A ',__dir__);include'/imooc/loader.php '; Spl_autoload_register (' \\imooc\\loader::autoload ');$Object=New\imooc\Object();Echo $Object->test ("Ouch-hello", 123);//the __call method is called automatically when you call a method that does not exist with test/*Output: String (4) "Test" Array (2) {[0]=>string (9) "Ouch-fed" [1]=>int (123)} try*/PHPfile name: object.phpnamespace Imooc; class Object {

Php magic constants and instance code, and magic Constants Php magic Constants Instance: Class MoShu {public function moshu () {echo 'current class Name :'. _ CLASS __. " The result is as follows: Current Class Name: MoShu Current Method Name: moshu number of lines in the current file: 10 absolute path of the current file: D: \ xampp \ htdocs \ test \ moshu.

For PHP loading operations and other two magic methods, load magic Load class// Include ("./Ren. class. php ");// Include "./Ren. class. php ";Include_once ("./Ren. class. php ");Include_once ("./Ren. class. php ");$ F = new Ren ();$ F-> test ();Require ("./Ren. class. php ");Require_once ("./Ren. class. php ");Require_once "./Ren. class. php ";$ F = new Ren ();$ F-> test ();Automatic loading class// 1. All

The magic of canvas and the magic of canvas Canvas has a magic method, getImageData. It can obtain and change the color values of no pixel in the image within the canvas. If you have various filter algorithms. You can use canvas to convert the image filter to a function similar to meitu xiuxiu. Usage: 1: import the image to the canvas first. 2: var canvasData = c

Conversion of python Black Magic Code and python Magic Code When we use libraries in other languages for encoding and conversion, there are usually only two (or three) Types of characters that cannot be understood ): Throw an exception Replace with a replacement character Skip However, in the complex real world, due to various unreliable texts, there will always be some discord factors such as mixe

PHP built-in variable: directory_separator Directory_separator is a PHP built-in command that returns the path separator associated with the operating system, returned on Windows, and returns on Linux or Unix-like, that's the difference. It is usually used when defining the include file path or uploading the save directory. PHP treats all class methods that start with __ (two underscores) as magic methods. So when you define your own class method, don

This article provides a detailed analysis of the magic constants and magic methods in PHP5. This article provides a detailed analysis of the magic constants and magic methods in PHP5. Magic constant:1. _ LINE __Returns the current row number in the file.2. _ FILE __Re

This article mainly introduces the PHP magic function and Magic constants related knowledge introduction, the need for friends can refer to, hope to help everyone. PHP Magic function 1. __construct () Called when an object is instantiated,When __construct and a function with a class name are present, __construct is called and the other is not called. 2. __destr

Cleverly reload the magic method _ call (), and reload the magic _ call. Cleverly reload the magic method _ call () and reload the magic _ call for six months. I feel that I have learned more things in the past six months than I have learned in the university for four years, the main reason is the calm down, and the go

Example of php magic constants: php magic constants. Php magic constant example introduction, php magic constant php provides a lot of predefined constants to any script it runs, common php magic constants include _ CLASS____FUNCTI php m