PHP将变量传递给函数的返回值

Question

Is it possible to do something like this:

Class::function('some_text') = 'aaaaa';

And get this 'aaaaa' string inside the Class::function() ?

Answer 1

Yes it is by doing this:

MyClass::func('some_text', 'aaaaa');

Eg

class MyClass {
    public static function func($text, $aaa) {
        ...
    }
}

Alternatively (and much worse then the previous IMHO):

global $foo;
$foo = 'bar';

class Baz {
    public static function bong() {
        global $foo;
        ...
    }
}

Answer 2

That syntax is not available in PHP.

In Perl, this type of function would be called an LVALUE function .

Answer 3

With your case it seems like you're searching for a solution like this?

Session::Set(array("key" => "value"));

class Session {
    public static function Set($kvp) {
        foreach ($kvp as $key => $value) {
            echo $key . " is " . $value . "<br />";
        }
    }
}

Answer 4

you can return a reference and change the value of it.

class MyClass {

  private static $variable;

  public static function &func($random_param) {
    return self::$variable;
  }
}

call it like this

$reference = &MyClass::func('asd');
$reference = "15";

echo MyClass::func('asdasd'); // "15"