Optimize Your PHP Code

I was navigating the web using Stumble and I saw an interesting post that enumerate 40 tips for the optimization of your PHP code so I decide to post this tips on mi site.

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 line of code that accepts arrays as search and replace arguments.

It’s better to use select statements than multi if, else if, statements.

Error suppression with @ is very slow.

Turn on apache’s mod_deflate

if you want to see the rest of this great list just click here.