PHP ,这是什么意思? $ctrl->$action ();
$ctrl-> $action ();
$ctrl 是一个对象,访问这个是什么东西?
--------------------------------------------------------------
访问属性 是这样的 $ctrl->action;
访问类方法 是这样的 $ctrl->action();
回复讨论(解决方案)
$ctrl->$action (); 也是调用一个方法名,只是这个方法的名字是用一个变量$action来代替
$ctrl->$action (); 也是调用一个方法名,只是这个方法的名字是用一个变量$action来代替
请问这是什么意思?请给个简单的例子演示一下好不好??
function fn() {
echo 1;
}
$fn = 'fn';
$fn();
无非就是把函数或对象方法名变量化了 套进去照样运行
但这样使用前,建议用function_exist和method_exist检查
function fn() {
echo 1;
}
$fn = 'fn';
$fn();
无非就是把函数或对象方法名变量化了 套进去照样运行
但这样使用前,建议用function_exist和method_exist检查
谢谢,这样一看就懂了。。。~
$ctrl->{$action} ();其实就是把$action变量的值当作$ctrl类的一个方法了

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