站长图库向大家介绍了callStatic函数等相关知识,希望对您有所帮助
这种情况在larave中尤其常见,但是开发过程中很明显这些有一部分不是静态的,比如你使用一个模型User,那么你每次实例化出来他都是一个全新的,互不影响,这里就用到了一个魔术方法__callStatic。
举个栗子:
<?phpclass Test{ public function __call($name, $arguments) { echo 'this is __call'. PHP_EOL; } public static function __callStatic($name, $arguments) { echo 'this is __callStatic:'. PHP_EOL; }} $test = new Test();$test->hello();$test::hi();//this is __call:hello//this is __callStatic:hi当然魔术方法也是很耗性能的一种方式,每次调用的时候后回先扫一遍class没找到方法时才会调用它,而为了代码的整洁和抽象这个方法也能给很大的帮助,在这之间去要有个权衡
下面实现的 log 类,采用的就是这种方法,将方法解耦出来,只要符合规定的接口就能调用
<?php class Test{ //获取 logger 的实体 private static $logger; public static function getLogger(){ return self::$logger?: self::$logger = self::createLogger(); } private static function createLogger(){ return new Logger(); } public static function setLogger(LoggerInterface $logger){ self::$logger = $logger; } public function __call($name, $arguments) { call_user_func_array([self::getLogger(),$name],$arguments); } public static function __callStatic($name, $arguments) { forward_static_call_array([self::getLogger(),$name],$arguments); }} interface LoggerInterface{ function info($message,array $content = []); function alert($messge,array $content = []);} class Logger implements LoggerInterface { function info($message, array $content = []) { echo 'this is Log method info' . PHP_EOL; var_dump($content); } function alert($messge, array $content = []) { echo 'this is Log method alert: '. $messge . PHP_EOL; }} Test::info('喊个口号:',['好好','学习','天天','向上']);$test = new Test();$test->alert('hello');输出:
this is Log method infoarray(4) { [0]=> string(6) "好好" [1]=> string(6) "学习" [2]=> string(6) "天天" [3]=> string(6) "向上"}this is Log method alert: hello