note 108239 added to function.str-replace

I was surprisingly unable to find a function for performing replaces on strings that allowed for the specification of a limit on the number of occurrences of $search to replace. Here's a function that allows you to do so, and a second function that does the same while starting the replace from the last occurrence of $search: <?php function str_replace_limit($search,$replace,$subject,$limit,&$count = null) { $count = 0; if ($limit <= 0) return $subject; $occurrences = substr_count($subject,$search); if ($occurrences === 0) return $subject; else if ($occurrences <= $limit) return str_replace($search,$replace,$subject,$count); //Do limited replace $position = 0; //Iterate through occurrences until we get to the last occurrence of $search we're going to replace for ($i = 0; $i < $limit; $i++) $position = strpos($subject,$search,$position) + strlen($search); $substring = substr($subject,0,$position + 1); $substring = str_replace($search,$replace,$substring,$count); return substr_replace($subject,$substring,0,$position+1); } function str_replace_limit_reverse($search,$replace,$subject,$limit,&$count = null) { $count = 0; $search = strrev($search); $replace = strrev($replace); $subject = strrev($subject); return strrev(str_replace_limit($search,$replace,$subject,$limit,$count)); } ?> ---- Server IP: 72.55.140.6 Probable Submitter: 208.97.108.26 ---- Manual Page -- http://www.php.net/manual/en/function.str-replace.php Edit -- https://master.php.net/note/edit/108239 Del: integrated -- https://master.php.net/note/delete/108239/integrated Del: useless -- https://master.php.net/note/delete/108239/useless Del: bad code -- https://master.php.net/note/delete/108239/bad+code Del: spam -- https://master.php.net/note/delete/108239/spam Del: non-english -- https://master.php.net/note/delete/108239/non-english Del: in docs -- https://master.php.net/note/delete/108239/in+docs Del: other reasons-- https://master.php.net/note/delete/108239 Reject -- https://master.php.net/note/reject/108239 Search -- https://master.php.net/manage/user-notes.php