php PHP中的动态类方法调用

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时间:2020-08-24 22:04:27  来源:igfitidea点击:

Dynamic class method invocation in PHP

php

提问by VirtuosiMedia

Is there a way to dynamically invoke a method in the same class for PHP? I don't have the syntax right, but I'm looking to do something similar to this:

有没有办法为PHP动态调用同一个类中的方法?我没有正确的语法,但我希望做类似的事情:

$this->{$methodName}($arg1, $arg2, $arg3);

回答by andy.gurin

There is more than one way to do that:

有不止一种方法可以做到这一点:

$this->{$methodName}($arg1, $arg2, $arg3);
$this->$methodName($arg1, $arg2, $arg3);
call_user_func_array(array($this, $methodName), array($arg1, $arg2, $arg3));

You may even use the reflection api http://php.net/manual/en/class.reflection.php

您甚至可以使用反射 api http://php.net/manual/en/class.reflection.php

回答by Konrad Rudolph

Just omit the braces:

只需省略大括号:

$this->$methodName($arg1, $arg2, $arg3);

回答by RodolfoNeto

You can use the Overloading in PHP: Overloading

您可以使用 PHP 中的重载: 重载

class Test {

    private $name;

    public function __call($name, $arguments) {
        echo 'Method Name:' . $name . ' Arguments:' . implode(',', $arguments);
        //do a get
        if (preg_match('/^get_(.+)/', $name, $matches)) {
            $var_name = $matches[1];
            return $this->$var_name ? $this->$var_name : $arguments[0];
        }
        //do a set
        if (preg_match('/^set_(.+)/', $name, $matches)) {
            $var_name = $matches[1];
            $this->$var_name = $arguments[0];
        }
    }
}

$obj = new Test();
$obj->set_name('Any String'); //Echo:Method Name: set_name Arguments:Any String
echo $obj->get_name();//Echo:Method Name: get_name Arguments:
                      //return: Any String

回答by Peter Bailey

You can also use call_user_func()and call_user_func_array()

您还可以使用call_user_func()call_user_func_array()

回答by Noah Goodrich

If you're working within a class in PHP, then I would recommend using the overloaded __call function in PHP5. You can find the reference here.

如果您在 PHP 的类中工作,那么我建议使用 PHP5 中的重载 __call 函数。您可以在此处找到参考。

Basically __call does for dynamic functions what __set and __get do for variables in OO PHP5.

基本上 __call 对动态函数的作用就像 __set 和 __get 对 OO PHP5 中的变量所做的那样。

回答by Snapey

Still valid after all these years! Make sure you trim $methodName if it is user defined content. I could not get $this->$methodName to work until I noticed it had a leading space.

这么多年了还有效!如果 $methodName 是用户定义的内容,请确保对其进行修剪。我无法让 $this->$methodName 工作,直到我注意到它有一个前导空格。

回答by user46637

In my case.

就我而言。

$response = $client->{$this->requestFunc}($this->requestMsg);

Using PHP SOAP.

使用 PHP SOAP。

回答by David

You can store a method in a single variable using a closure:

您可以使用闭包将方法存储在单个变量中:

class test{        

    function echo_this($text){
        echo $text;
    }

    function get_method($method){
        $object = $this;
        return function() use($object, $method){
            $args = func_get_args();
            return call_user_func_array(array($object, $method), $args);           
        };
    }
}

$test = new test();
$echo = $test->get_method('echo_this');
$echo('Hello');  //Output is "Hello"

EDIT: I've edited the code and now it's compatible with PHP 5.3. Another example here

编辑:我已经编辑了代码,现在它与 PHP 5.3 兼容。这里的另一个例子