Re: str_replace performance in large mailing script

On Sun, 24 Aug 2003 15:38:13 +0100, you wrote: >Second tip is that sprintf() should be faster than str_replace(). Compare: > >$text = "Hello %s"; >$name = "John"; > >echo (str_replace ("%s", $name, $text)); >echo (sprintf ($text, $name)); Thinking about it, straight concatenation should be faster than sprintf() $text = "Hello %s, welcome to the list"; $text = explode ("%s", $text); echo ($text[0] . $name . $text[1]); The explode goes outside the main loop, of course. Pre-processing. The downside is that the simpler (and faster) you make it, the more assumptions you have to make about the template (in this case, one substitution per line and the substitution can't be the first or last element on the line).