note 13351 added to function.str-replace.php

I noticed that every time i do a replace on a string pattern with a function that returns a string, the functions gets executed whether the pattern is found or not! this significantly impacts runtime if you are a doing a looping replace (like i was) and if the function is large so be careful. example of what i'm talking about: $line = str_replace("PATTERN", replacement(), $line); my solution-> make a variable = replacement() before the loop. http://www.php.net/manual/en/function.str-replace.php