[PHP] Re: passing a function as a parameter

[Torsten Roehr]

"Bob Lockie" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I want to pass a function as a parameter and execute it in another
function.
> A callback. :-)
>
> For example:
>
> function a() {
>      echo "a";
> }
>
>
> function b( $func ) {
>      func();
>      echo "b";
> }
>
>
> The output of "b( a )" will be "ab".

Take a look at call_user_func():
http://de3.php.net/manual/en/function.call-user-func.php

You have to pass the name of the function instead of the function itself:

function a() {
     echo "a";
}

function b($func) {
     call_user_func($func);
     echo "b";
}

b('a');

Regards, Torsten

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