Bug #77514 [NEW]: mb_ereg_replace() bug

From: legale dot legale at gmail dot com Operating system: linux PHP version: 7.3.1 Package: *Extensibility Functions Bug Type: Bug Bug description:mb_ereg_replace() bug Description: ------------ Function returns incorrect result. Test script: --------------- <?php $a="abc123"; echo unpack("H*", mb_ereg_replace("123","def\\",$a))[1]; echo PHP_EOL; Expected result: ---------------- 61626364655c Actual result: -------------- 61626364655c00 -- Edit bug report at https://bugs.php.net/bug.php?id=77514&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77514&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77514&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77514&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=77514&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=77514&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=77514&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=77514&r=needscript Try newer version: https://bugs.php.net/fix.php?id=77514&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=77514&r=support Expected behavior: https://bugs.php.net/fix.php?id=77514&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=77514&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=77514&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=77514&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77514&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=77514&r=dst IIS Stability: https://bugs.php.net/fix.php?id=77514&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=77514&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=77514&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=77514&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=77514&r=mysqlcfg