Think Different

If a method can be static, declare it static. Speed improvement is by a factor of 4. echo is faster than print . Use echo's multiple parameters instead of string concatenation. Set the maxvalue for your for-loops before and not in the loop. Unset your variables to free memory, especially large arrays. Avoid magic like __get, __set, __autoload require_once() is expensive Use full paths in includes and requires, less time spent on resolving the OS paths. If you need to find out the time when the script started executing, $_SERVER[’REQUEST_TIME’] is preferred to time() See if you can use strncasecmp, strpbrk and stripos instead of regex str_replace is faster than preg_replace, but strtr is faster than str_replace by a factor of 4 If the function, such as string replacement function, accepts both arrays and single characters as arguments, and if your argument list is not too long, consider writing a few redundant replacement statements, passing one character at a time, instead of one ...