array-value.php

<?php

function array_value($key, $search, $default=NULL, $callback=NULL) {
	$value = $default;
	
	if ( array_key_exists($key, $search) ) {
		$value = $search[$key];
		$value = ( function_exists($callback) ? $callback($value) : $value);
	}
	
	return $value;
}