note 52135 added to function.preg-replace

It's important to note how preg_match actually works when processing arrays - it's the same as running preg_match repeatedly in serial. Here's a demonstration: <? $a="a b c"; echo "Sample 1 "; echo $b=str_replace("b", "_", $a); echo "\n"; echo "Sample 2 "; echo str_replace("_", "BAD", $b); echo "\n"; $find=array('/b/', "/_/"); $replace=array('_', 'BAD'); echo "Sample 3 "; echo preg_replace($find, $replace, $a); echo "\n"; ?> This prints out Sample 1 a _ c Sample 2 a BAD c Sample 3 a BAD c Since I'd expected preg_replace to operate in one pass, I'd expected the output to be: Sample 1 a _ c Sample 2 a BAD c Sample 3 a b c ---- Manual Page -- http://www.php.net/manual/en/function.preg-replace.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+52135 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+52135&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+52135&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+52135&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+52135&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+52135&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+52135&report=yes Search -- http://master.php.net/manage/user-notes.php