sprintf3 - Replace %var% from a string #php

sprintf3.php

<?php
/**
 * replaces %your_var% from a string 
 *
 * sprintf3( 'Hello %your_name%, my name is %my_name%!'
 *     	     , array( 'your_name'         => 'Matt'
 * 		            , 'my_name'           => 'Jim'
 * 		            )
 * 		     );
 */
function sprintf3($str, $vars, $char = '%'){
    $tmp = array();
    foreach($vars as $k => $v){
        $tmp[$char . $k . $char] = $v;
    }
    return str_replace(array_keys($tmp), array_values($tmp), $str);
}
?>