#47480 [NEW]: preg_replace with "/i" is not case insensitive

From: sehh at ionos dot gr Operating system: Linux PHP version: 5.2.8 PHP Bug Type: *Regular Expressions Bug description: preg_replace with "/i" is not case insensitive Description: ------------ preg_replace with the "/i" (case insensitive search) does not do a case insensitive search for UTF-8 Greek characters, while it works fine for English characters. Reproduce code: --------------- <?php $string = "Ôï êõñßùò ôìÞìá ôïõ êéíçôÞñá, áõôü ðïõ ðåñéëáìâÜíåé ôïõò êõëßíäñïõò"; // UTF-8 string in Greek language $target1 = "ÊÉÍÇÔÇÑÁ"; // Target string to search for (capitalized) $target2 = "êéíçôÞñá"; // Target string to search for (small letters) $replace = "itworks"; // Replace with this string $rc = preg_replace("/$target1/imsUu", $replace, $string, -1, $counter); // Execute search for target1 and replace echo "\nSearching for: ".$target1."\n"; // Report output echo "Result string: ".$rc."\n"; echo "Found and replaced: ".$counter."\n"; $rc = preg_replace("/$target2/imsUu", $replace, $string, -1, $counter); // Execute search for target2 and replace echo "\nSearching for: ".$target2."\n"; // Report output echo "Result string: ".$rc."\n"; echo "Found and replaced: ".$counter."\n\n"; ?> Expected result: ---------------- I expect the Found and Replaced to be both "1" since the expression is not case sensitive. Actual result: -------------- $ php -f test.php Searching for: ÊÉÍÇÔÇÑÁ Result string: Ôï êõñßùò ôìÞìá ôïõ êéíçôÞñá, áõôü ðïõ ðåñéëáìâÜíåé ôïõò êõëßíäñïõò Found and replaced: 0 Searching for: êéíçôÞñá Result string: Ôï êõñßùò ôìÞìá ôïõ itworks, áõôü ðïõ ðåñéëáìâÜíåé ôïõò êõëßíäñïõò Found and replaced: 1 -- Edit bug report at http://bugs.php.net/?id=47480&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=47480&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=47480&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=47480&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=47480&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=47480&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=47480&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=47480&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=47480&r=needscript Try newer version: http://bugs.php.net/fix.php?id=47480&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=47480&r=support Expected behavior: http://bugs.php.net/fix.php?id=47480&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=47480&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=47480&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=47480&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=47480&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=47480&r=dst IIS Stability: http://bugs.php.net/fix.php?id=47480&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=47480&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=47480&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=47480&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=47480&r=mysqlcfg