closure

closure

<?php

$somefunction = function($foo, $bar){
//do something
}

$myfunction = ($somefunction($foo, $bar), $variable){
//do stuff
//call somefunction
//do some more stuff
}

Maybe this...

$myfunction = (function(foo, bar) { 
  return function(foo, bar) {  
    // do something 
  };
})($foo, $bar);

You could do:

<?php
$somefunction = function($foo, $bar){
//do something
}

$myfunction = function($function, $variable){
$result = $function('foo', 'bar');
//do stuff
//call somefunction
//do some more stuff
}($somefunction, $variable)

Ooops, I wrote my comment in javascript. In PHP, I am not sure why you can't just do this then...

function my_function($foo, $bar) {

}

$callback = 'my_function';
if (function_exists($callback)) {
  $callback('foo', 'bar');
}