php 通过字符串调用方法？
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Call method by string?
提问by dynamic
Class MyClass{
private $data=array('action'=>'insert');
public function insert(){
echo 'called insert';
}
public function run(){
$this->$this->data['action']();
}
}
This doens't work:
这不起作用：
$this->$this->data['action']();
only possibilites is to use call_user_func();?
唯一的可能是使用call_user_func();?
回答by Mārti?? Briedis
Try:
尝试：
$this->{$this->data['action']}();
You can do it safely by checking if it is callable first:
您可以通过首先检查它是否可调用来安全地执行此操作：
$action = $this->data['action'];
if(is_callable(array($this, $action))){
$this->$action();
}else{
$this->default(); //or some kind of error message
}
回答by Brad Koch
Reemphasizing what the OP mentioned, call_user_func()and call_user_func_array()are also good options. In particular, call_user_func_array()does a better job at passing parameters when the list of parameters might be different for each function.
重新强调了OP提到什么，call_user_func()和call_user_func_array()也是不错的选择。特别是，call_user_func_array()当每个函数的参数列表可能不同时，在传递参数方面做得更好。
call_user_func_array(
array($this, $this->data['action']),
$params
);
