PHP. call static method of class which class name saved in static variable of other class?

Question

for example i have 2 Classes: "Main" and "Dll_Main_Bla".

Class "Dll_Main_Bla" has static methods only! for example

public static function doIt($argument){return $argument*2;};

Inside Main I have static variable public static $dll_bla = 'Dll_Main_Bla';

In non-static method of Class Main I want To call:

$x = Dll_Main_Bla::doIt(2);

but I want to centralize initializing of my Dlls and call them like here:

// how to ??? $x = self::$dll_bla::doIt(2);

Yes, it doesn't works, but you might understand what exactly I want. :) How would I write that line to make it workable? Thanks for any proposition!

Sounds to me like your real problem is having to work with badly written code... — Elias Van Ootegem
– Elias Van Ootegem, Commented Nov 21, 2014 at 10:17

RichardBernards · Accepted Answer · 2014-11-21 09:58:32Z

2

You can use call_user_func_array() (PHP reference link)

Small test example:

<?php

class Main {
    public static $dll_bla = 'Dll_Main_Bla';

    public function init() {
        $x = call_user_func_array(array(self::$dll_bla, 'doIt'),array(2));
        echo $x;
    }
}

class Dll_Main_Bla {
    public static function doIt($argument) {
        return $argument*2;
    }
}

$main = new Main;
$main->init();

answered Nov 21, 2014 at 9:58

RichardBernards

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Comments

androidavid · Accepted Answer · 2014-11-21 09:56:00Z

1

Consider doing this:

<?php
class Dll_Main_Bla {
    public static function toBeCalled($anyParam) {
        return 'Elo, ' . $anyParam;
    }
}

class Main {
    public static $dll_bla = 'Dll_Main_Bla';

    public function test() {
        $className = Main::$dll_bla;
        $x = $className::toBeCalled('Vincent');

        return $x;
    }
}

$main = new Main;
echo $main->test(); //should do what you expect it to do

answered Nov 21, 2014 at 9:56

androidavid

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5 Comments

LINKeRxUA Over a year ago

Yes! It works! Thanks! But is it possible to call without temporary variable $className? Want to see shorter solution. ${self::$dll_bla}::toBeCalled('Vincent') or something like that...

fortune Over a year ago

for shorter way, please check @RichardBernards solution using call_user_func_array

LINKeRxUA Over a year ago

No, thanks! Your solution looks like writes easier :)

RichardBernards Over a year ago

@LINKeRxUA his solution does have a much larger footprint... Hence my solution ;)

LINKeRxUA Over a year ago

@RichardBernards, I prefare androidavid solution, thank you for helping too!

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