Edit report at http://bugs.php.net/bug.php?id=11457&edit=1
ID: 11457 Comment by: cancausecancerr at yahoo dot com dot cn Reported by: adamw at uscho dot com Summary: limit for str_replace() Status: Wont fix Type: Feature/Change Request Package: *General Issues PHP Version: 4.0.5 Block user comment: N Private report: N New Comment: I would vote to add a str_replaceonce function where the $count arg specifies which occurrence in the string to change (negatives also.) Changing the existing str_replace is something people can do on their own installation but I don't think it will be changed in the main code because it could break some existing software written in php. Previous Comments: ------------------------------------------------------------------------ [2011-01-17 02:59:37] TrentTompkins at gmail dot com This is such a great idea! I can't believe it was suggested 10 years ago and no one added it =/ ------------------------------------------------------------------------ [2010-12-01 16:24:23] [email protected] Use preg_replace() if you need this. ------------------------------------------------------------------------ [2009-11-18 16:44:37] felipe dot tonello at felipetonello dot com On version 5.3.0 the 4th parameter, count, does not work when not passed by reference. $count = 1; echo str_replace("o", "a", "foo", $count); // returns "faa" Even if it was working well, thought, this is not a good approach. ------------------------------------------------------------------------ [2009-04-19 01:46:26] phpnet at sabintr dot com How about this... $count is passed by reference. Don't change this. if (is_null($count)) { //replace all; } elseif (floor($count) < 1) { //replace all; } else { //replace first floor($count) occurences; } $count = number of actual replacements made The only change from past behavior is that $count must be unset or made NULL before passing it by reference: echo str_replace("o", "a", "moo", $count); // returns "maa" echo str_replace("o", "a", "mooooo", $count); // returns "maaooo" unset($count); echo str_replace("o", "a", "mooooo", $count); // returns "maaaaa" Thoughts? ------------------------------------------------------------------------ [2007-10-17 14:39:22] jetweedy at hotmail dot com In response to this, here's a simple function to replace the first one only (note that you could loop this function to replace more than one, but not all): function str_replaceFirst($s,$r,$str) { $l = strlen($str); $a = strpos($str,$s); $b = $a + strlen($s); $temp = substr($str,0,$a) . $r . substr($str,$b,($l-$b)); return $temp; } ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/bug.php?id=11457 -- Edit this bug report at http://bugs.php.net/bug.php?id=11457&edit=1
