php 动态执行带有参数的类方法
PHP中,在事先知道类和类的方法名称,使用call_user_func函数可以做动态执行。
官方手册给出了以下范例:
代码如下:
<?php // 使用了NameSpace的例子 namespace Foobar; class Foo { static public function test() { print "Hello world!\n"; } } call_user_func(__NAMESPACE__ .'\Foo::test'); // As of PHP 5.3.0 // Hello world! call_user_func(array(__NAMESPACE__ .'\Foo', 'test')); // As of PHP 5.3.0 // Hello world! ?>
代码如下:
<?php // 直接调用方法的例子 class myclass { static function say_hello() { echo "Hello!\n"; } } $classname = "myclass"; call_user_func(array($classname, 'say_hello')); call_user_func($classname .'::say_hello'); // As of 5.2.3 ?>
那么,如果是普通的方法,而且,方法带有参数该怎么办?
以下是笔者写的一个小例子,供参考:
代码如下:
<?php // 执行带有参数的类 class Loveapple{ public function sayHello($a, $b){ echo "Hello:".$a.". ".$b."\n"; } } $obj = new Loveapple(); //执行结果 Hello:loveapple. Using instance. call_user_func(array($obj, "sayHello"), "loveapple", "Using instance."); //执行结果 Hello:loveapple. Using class name. call_user_func(array("Loveapple", "sayHello"), "loveapple", "Using class name."); ?>
更多相关教程请访问 php编程从入门到精通全套视频教程

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