PHP late static binding example sharing
1. The working principle of late static binding is to store the class name in the previous "non-forwarding call" (non-forwarding call). When making a static method call, the class name is the one explicitly specified (usually on the left side of the :: operator); when making a non-static method call, it is the class to which the object belongs. This feature is named "late static binding" from a language-internal perspective. "Late binding" means that static:: is no longer resolved to the class in which the current method is defined, but is calculated at actual runtime.
2. Test example:
class A{ public function run() { static::test(); //后期静态绑定 self::test(); //不是后期静态绑定 } public static function test() { echo 'A Class<br>'; }}class B extends A { public static function test() { echo 'B Class<br>'; }} $a = new B();$a->run(); //输出结果 //B Class //A Class
Related recommendations:
Detailed description of a late static binding in Laravel
PHP object-oriented post-static binding function introduction
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