From: bugs dot php dot net at kreidenweis dot com Operating system: Linux PHP version: 5.2.2 PHP Bug Type: Strings related Bug description: substr() undocumented behavior change from 5.2.1 to 5.2.2
Description: ------------ substr() handled a negative $start parameter with an absolute value larger than the $string's length gracefully and sensibly up to PHP 5.2.1 In 5.2.2 this behavior changed without that being mentioned in the documentation. IMHO it probably has something to do with the fix for http://bugs.php.net/bug.php?id=40754 I guess (and hope ;) the behavior change wasn't intended. But if indeed so, please put a warning in the documentation. Reproduce code: --------------- var_dump(substr('abc', -4)); Expected result: ---------------- string(3) "abc" (up to PHP 5.2.1 this is what happens) Actual result: -------------- bool(false) (output by PHP 5.2.2) -- Edit bug report at http://bugs.php.net/?id=41375&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=41375&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=41375&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=41375&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=41375&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=41375&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=41375&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=41375&r=needscript Try newer version: http://bugs.php.net/fix.php?id=41375&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=41375&r=support Expected behavior: http://bugs.php.net/fix.php?id=41375&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=41375&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=41375&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=41375&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=41375&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=41375&r=dst IIS Stability: http://bugs.php.net/fix.php?id=41375&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=41375&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=41375&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=41375&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=41375&r=mysqlcfg
