#39279 [NEW]: mb_ereg_replace() has an error

From: ivb at is dot ua Operating system: Windows 2000 SP4 PHP version: 5CVS-2006-10-27 (CVS) PHP Bug Type: mbstring related Bug description: mb_ereg_replace() has an error Description: ------------ mb_ereg_replace() works incorrectly if 2nd parameter is multibyte and contains substings \\n (n - digit). It returns substing \n itself instead of corresponding parenthesized substring. If 2nd parameter not multibyte - \\n correctly replaced with corresponding parenthesized substrings. If 2nd parameter multibyte, but not contains \\n substrings - replacement works correctly. Reproduce code: --------------- <?php function a2u ( $a ) { return mb_convert_encoding ( $a, "UTF-16LE", "ASCII" ); } function u2a ( $a ) { return mb_convert_encoding ( $a, "ASCII", "UTF-16LE" ); } mb_internal_encoding ( "UTF-16LE" ); mb_regex_encoding ( "UTF-16LE" ); $str = "abc..def"; $pat = "([^\.])\.\.([^\.])"; $rep = "\\1...\\2"; $res = mb_ereg_replace ( a2u ( $pat ), a2u ( $rep ), a2u ( $str ) ); echo "{" . $str . "}{" . u2a ( $res ) . "}\n"; ?> Expected result: ---------------- {abc..def}{abc...def} Actual result: -------------- {abc..def}{ab\1...\2ef} -- Edit bug report at http://bugs.php.net/?id=39279&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=39279&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=39279&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=39279&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=39279&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=39279&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=39279&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=39279&r=needscript Try newer version: http://bugs.php.net/fix.php?id=39279&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=39279&r=support Expected behavior: http://bugs.php.net/fix.php?id=39279&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=39279&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=39279&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=39279&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=39279&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=39279&r=dst IIS Stability: http://bugs.php.net/fix.php?id=39279&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=39279&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=39279&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=39279&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=39279&r=mysqlcfg