#41269 [NEW]: ctype_digit returns 1 for an empty string

From: sedat dot capar at isbank dot net dot tr Operating system: win2003 PHP version: 5.2.2 PHP Bug Type: Feature/Change Request Bug description: ctype_digit returns 1 for an empty string Description: ------------ ctype_digit returns 1 (TRUE) for an empty string (I do not mean a blank character) however it must return false (NULL) because empty string means there is no digit. Reproduce code: --------------- $number=""; print ctype_digit($number)."*"; $number=" "; print ctype_digit($number)."*"; $number="1"; print ctype_digit($number); Expected result: ---------------- **1 Actual result: -------------- 1**1 -- Edit bug report at http://bugs.php.net/?id=41269&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=41269&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=41269&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=41269&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=41269&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=41269&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=41269&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=41269&r=needscript Try newer version: http://bugs.php.net/fix.php?id=41269&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=41269&r=support Expected behavior: http://bugs.php.net/fix.php?id=41269&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=41269&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=41269&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=41269&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=41269&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=41269&r=dst IIS Stability: http://bugs.php.net/fix.php?id=41269&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=41269&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=41269&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=41269&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=41269&r=mysqlcfg