PHP中is_callable()函数的用法详解
<?php
class test {
	static function a() {
		return "test";
	}
}
class abc {
	public function a($Object,$funcName){	
		if (!is_callable(array($Object,$funcName))){//此处array($object,$funcname)的用法，相当于$object::$funcname调用$object的$funcname方法
			echo("Error");
		}else {
			echo("OK");
		}
	}
}
 
$abc=new abc();
$abc->a("test","aa");//test类下没有aa方法，会输出error
$abc->a("test","a");//test类下有a方法,会输出ok
?>