PHP REGEX: Problem with Smiley `:)` and `:))`

Question

What I want

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Hi! I want to replace :) to smile.png and :)) to laugh.png.

Th

Answer 1

$string = str_replace(':))', 'laugh.png', $string);
$string = str_replace(':)', 'smile.png', $string);

php.net on str_replace: "If you don't need fancy replacing rules (like regular expressions), you should always use this function instead of ereg_replace() or preg_replace()."