Doc #76245 [NEW]: mb_ereg_match matches at beginning of subject only

From: jake at qzdesign dot co dot uk Operating system: Windows 7 32-bit PHP version: 7.1.16 Package: mbstring related Bug Type: Documentation Problem Bug description:mb_ereg_match matches at beginning of subject only Description: ------------ The manual page for mb_ereg_match at https://secure.php.net/manual/en/function.mb-ereg-match.php makes no mention that $pattern is only matched at the beginning of $string (i.e. it includes an implied ^ at the start). It is mentioned in a user contributed note, but this behaviour really should be included in the main documentation, probably in a highlighted "Note" or "Warning" box, as it is very important for using the function, and the behaviour would be unexpected as most other similar functions in both PHP and other languages do not behave this way. (It may be a bug in the function and it is not supposed to behave this way, but for compatibility reasons it probably can't be fixed until a major release.) Test script: --------------- <?php // note space at start of $string parameter echo mb_ereg_match('[[:alpha:]]', ' a') ? 'matched' : 'not matched'; Expected result: ---------------- Based on the documentation as it is, I expected "matched" to be output. I expect to be able to easily determine what this simple script would output from the documantation. Actual result: -------------- "not matched" is output, but the documentation makes no indication that this would be the case. -- Edit bug report at https://bugs.php.net/bug.php?id=76245&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76245&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76245&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76245&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76245&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76245&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76245&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76245&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76245&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76245&r=support Expected behavior: https://bugs.php.net/fix.php?id=76245&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76245&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76245&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76245&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76245&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76245&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76245&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76245&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76245&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76245&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76245&r=mysqlcfg