动态函数 ~~~ <?php function sayHello() { echo "Hello<br />"; } $function_holder = "sayHello"; $function_holder(); ?> ~~~ 调用类方法的二方式 ~~~ <?php 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 $myobject = new myclass(); call_user_func(array($myobject, 'say_hello')); ?> ~~~