#33437 [NEW]: comments throwing preg_replace script

From: php at karsites dot net Operating system: SuSE Linux 9.2 pro PHP version: 4.3.10 PHP Bug Type: PCRE related Bug description: comments throwing preg_replace script Description: ------------ I'm actually on php4-4.3.8-8.7 - stuck with that at the moment,as that ships with my Linux distro - SuSE 9.2 pro I did search the database for 'coments' but found nothing there regarding this possible bug. The code below trashes the script with the commented line in the script // original regex $regex = "!(</?)(\w+)([^>]*?>)!e"; Surely, everything to the right of // should be ignored as a comment? With the comment in place, the script produces the following trashed output: )!e"; $regex = "!(]*?>)!e"; $replacement = "'\\1'.strtolower('\\2').'\\3'"; $subject = " A rose"; echo "Before replacement \$subject is: $subject "; $new_sub = preg_replace($regex, $replacement, $subject); echo "After replacement \$subject is: $new_sub "; ?> Is this a bug, because it is not expected behaviour. If I remove the offending comment, the script produces the correct output. Regards - Keith Roberts Reproduce code: --------------- <?php // original regex $regex = "!(</?)(\w+)([^>]*?>)!e"; $regex = "!(</?)(\w+)([^>]*?>)!e"; $replacement = "'\\1'.strtolower('\\2').'\\3'"; $subject = "<BIGTEXT> A <BIGGEST>rose</BIGGEST> <PARA></BIGTEXT>"; echo "Before replacement \$subject is: $subject <br />"; $new_sub = preg_replace($regex, $replacement, $subject); echo "After replacement \$subject is: $new_sub <br />"; ?> Expected result: ---------------- Before replacement $subject is: A rose After replacement $subject is: A rose (the browser ignores the dummy tags, but the correct result can be seen with 'view source code' - ie lowercased tags) Actual result: -------------- )!e"; $regex = "!(]*?>)!e"; $replacement = "'\\1'.strtolower('\\2').'\\3'"; $subject = " A rose"; echo "Before replacement \$subject is: $subject "; $new_sub = preg_replace($regex, $replacement, $subject); echo "After replacement \$subject is: $new_sub "; ?> -- Edit bug report at http://bugs.php.net/?id=33437&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=33437&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=33437&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=33437&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=33437&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=33437&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=33437&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=33437&r=needscript Try newer version: http://bugs.php.net/fix.php?id=33437&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=33437&r=support Expected behavior: http://bugs.php.net/fix.php?id=33437&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=33437&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=33437&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=33437&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=33437&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=33437&r=dst IIS Stability: http://bugs.php.net/fix.php?id=33437&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=33437&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=33437&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=33437&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=33437&r=mysqlcfg