Bug #51880 [Asn->Fbk]: Missfunction of mb_eregi() and mb_ereg()

Edit report at https://bugs.php.net/bug.php?id=51880&edit=1 ID: 51880 Updated by: cmb@php.net Reported by: tnpaulik at gmail dot com Summary: Missfunction of mb_eregi() and mb_ereg() -Status: Assigned +Status: Feedback Type: Bug -Package: *Regular Expressions +Package: mbstring related Operating System: Windows, Linux, doesn't matter PHP Version: Irrelevant -Assigned To: moriyoshi +Assigned To: cmb Block user comment: N Private report: N New Comment: I can't reproduce this issue when the internal and the regex encoding are properly set: <http://3v4l.org/I4Ksj>. @tnpaulik: Can you? @bgamrat: the issue you have reported seems unrelated to this ticket. Please open a new ticket. Previous Comments: ------------------------------------------------------------------------ [2011-05-27 00:19:06] bgamrat at wirehopper dot com Some of my coworkers found that mb_regex_set_options is global in scope for the thread. If mb_regex_set_options is set differently on different threads, the mb_ereg functions will function differently as well. To verify, echo mb_regex_set_options() on each request of the earlier submitted test code. If it is incompatible with the regex, mb_ereg will not match. ------------------------------------------------------------------------ [2011-05-26 16:17:58] bgamrat at wirehopper dot com This may be related. I had a date string (YYYY-MM-DD HH:MM:SS) validation that was inconsistent. The code below runs the validation 100 times on the same values and regex. Most of the time the mb_ereg works, occasionally it doesn't. Earlier issues with case-sensitivity caused me to add a case-insensitive fallback, and to solve this issue, I added a fallback to use preg_match. <?php mb_internal_encoding('UTF-8'); mb_detect_order('UTF-8'); mb_regex_encoding('UTF-8'); echo date('r').'<br />';; for ($i=0;$i<100;$i++) filter ('^\d{4}\-\d{2}\-\d{2} \d{2}\:\d{2}\:\d{2}$','2011-05-15 09:00:07'); function filter($sRegExp,$sInput) { if (!isset($sInput)) return false; $sInput=trim($sInput); /* mb_ereg functions don't use slashes */ if ($sRegExp[0]=='/') $sRegExp=substr($sRegExp,1,-1); $aMatches=array(); $iResult=mb_ereg($sRegExp,$sInput,$aMatches); echo 'Testing '.$sInput.' against '.$sRegExp.PHP_EOL.var_export($aMatches,true).' result '.$iResult.'<br />';; if (strlen($sInput)!=$iResult) { $sLowerCaseRegExp=mb_strtolower($sRegExp); $sLowerCaseInput=mb_strtolower($sInput); $iResult=mb_ereg($sLowerCaseRegExp,$sLowerCaseInput,$aMatches); echo 'Fallback Testing '.$sLowerCaseInput.' against '.$sLowerCaseInput.PHP_EOL.var_export($aMatches,true).' result '.$iResult.'<br />';; if (strlen($sInput)!=$iResult) { $bResult=preg_match('/'.$sRegExp.'/i',$sLowerCaseInput); echo 'preg_match/i '.$bResult.'<br />'; return $bResult!=0; } } return true; } Linux domain.com 2.6.18-164.9.1.el5 #1 SMP Tue Dec 15 21:04:57 EST 2009 i686 i686 i386 GNU/Linux Apache/2.2.3 PHP version 5.1.6 mbstring Multibyte Support enabled Multibyte string engine libmbfl Multibyte (japanese) regex support enabled Multibyte regex (oniguruma) version 3.7.1 mbstring extension makes use of "streamable kanji code filter and converter", which is distributed under the GNU Lesser General Public License version 2.1. Directive Local Value Master Value mbstring.detect_order no value no value mbstring.encoding_translation Off Off mbstring.func_overload 0 0 mbstring.http_input pass pass mbstring.http_output pass pass mbstring.internal_encoding no value no value mbstring.language neutral neutral mbstring.strict_detection Off Off mbstring.substitute_character no value no value ------------------------------------------------------------------------ [2010-05-21 16:13:23] tnpaulik at gmail dot com Description: ------------ mb_eregi doesnt macht caseinsensitivity for non ASCII signs in PHP 5.2 and 5.3 Example: mb_eregi('Ü','ü') returns false. mb_ereg is case insensotoive for non ASCII charakters if i put tem in [] Example: mb_ereg("[Ü]","ü") returns true. Test script: --------------- if (!mb_eregi("Ü","ü")) echo "THAT shoudldn't be so...\n"; if (mb_ereg("[Ü]","ü")) echo "THAT shoudldn't be so...\n"; Expected result: ---------------- no output Actual result: -------------- THAT shoudldn't be so... THAT shoudldn't be so... ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=51880&edit=1