#49459 [NEW]: Use of case changing functions in preg_replace produces unexpected results

From: d dot reade at readesresidential dot com Operating system: CentOS 5.3 x86 PHP version: 5.2.10 PHP Bug Type: Unknown/Other Function Bug description: Use of case changing functions in preg_replace produces unexpected results Description: ------------ Trying to use preg_replace to change text to uppercase in-between <uc><uc>. However expected result doesn't occur and the text remains lowercase. No errors are logged. However adding some text after $1 outputs this text in uppercase, but the text in-between <uc><uc> remains as lowercase. Reproduce code: --------------- <? # Test 1: Attempt to replace 'my' with 'MY' $text = 'this is <uc>my<uc> string'; $text = preg_replace('/\<uc\>(.*)\<uc\>/', strtoupper('$1'), $text); echo $text.'<br><br>'; # Test 2: Add something after $1 which produces expected output $text = 'this is <uc>my<uc> string'; $text = preg_replace('/\<uc\>(.*)\<uc\>/', strtoupper('$1 cool'), $text); echo $text; ?> Expected result: ---------------- # Expected result for test 1 this is MY string # Expected result for test 2 this is MY COOL string Actual result: -------------- # Actual result for test 1 this is my string # Actual result for test 2 this is my COOL string -- Edit bug report at http://bugs.php.net/?id=49459&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=49459&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=49459&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=49459&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=49459&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=49459&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=49459&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=49459&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=49459&r=needscript Try newer version: http://bugs.php.net/fix.php?id=49459&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=49459&r=support Expected behavior: http://bugs.php.net/fix.php?id=49459&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=49459&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=49459&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=49459&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49459&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=49459&r=dst IIS Stability: http://bugs.php.net/fix.php?id=49459&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=49459&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=49459&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=49459&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=49459&r=mysqlcfg