Thursday, April 12, 2012

PHP pass function as param then call the function?


I need to pass a function as a parameter to another function and then call the passed function from withing the function...This is probably easier for me to explain in code..I basically want to do something like this:




function ($functionToBeCalled)
{
call($functionToBeCalled,additional_params);
}



Is there a way to do that.. I am using PHP 4.3.9



Thanks!


Source: Tips4all

4 comments:

  1. I think you are looking for call_user_func.

    An example from the PHP Manual:

    <?php
    function barber($type) {
    echo "You wanted a $type haircut, no problem";
    }
    call_user_func('barber', "mushroom");
    call_user_func('barber', "shave");
    ?>

    ReplyDelete
  2. function foo($function) {
    $function(" World");
    }
    function bar($params) {
    echo "Hello".$params;
    }

    $variable = 'bar';
    foo($variable);


    Additionally, you can do it this way. See variable functions.

    ReplyDelete
  3. In php this is very simple.

    <?php

    function here() {
    print 'here';
    }


    function dynamo($name) {
    $name();
    }

    //Will work
    dynamo('here');
    //Will fail
    dynamo('not_here');

    ReplyDelete
  4. You could also use call_user_func_array() it allows you to pass an array of parameters as the second parameter so you don't have to know exactly how many variables you're passing.

    ReplyDelete