note 68016 deleted from function.array-walk by philip

Note Submitter: legolas558 dot sourceforge comma net ---- Sorry for the previous wild post, which was incorrect too --- to <ludvig dot ericson at gmail dot com> I would solve the problem in the following way, which should be faster too. Note that the assignment to $string{$i} will use only the first character from the return value of the user callback function, so it is useless to return strings longer than 1 characters. <?php function string_walk(&$string, $funcname, $userdata = null) { for($i = 0; $i < strlen($string); $i++) $string{$i} = call_user_func($funcname, $string{$i}, $i, $userdata); } // does nothing function dummy_func($value, $position) { return $value; } // adds a space function spacing_func($value, $position) { echo $value.' '; return $value; } // converts each odd character to upper case function upper_func($value, $position) { if ($position % 2 == 0) return $value; else return strtoupper($value); } $my_string = 'fruit'; string_walk(&$my_string, 'spacing_func'); // Ouput: f r u i t $my_string = 'interesting'; string_walk(&$my_string, 'upper_func'); echo $my_string; // Output: iNtErEsTiNg ?>