#49939 [NEW]: iconv_substr, incorrect behaviour with $length=0

From: ladislav at marek dot su Operating system: linux PHP version: 5.3.0 PHP Bug Type: ICONV related Bug description: iconv_substr, incorrect behaviour with $length=0 Description: ------------ According to documentation and reflection: iconv_substr has third argument $length, default value is 0, but iconv_substr returns different result when argument is not passed and when argument is passed as zero. (Now it's not possible to call iconv_substr with $charset argument and preserve correct behaviour.) Reproduce code: --------------- var_dump(iconv_substr('foobar', 3)); // "bar" var_dump(iconv_substr('foobar', 3, 0)); // "" var_dump(iconv_substr('foobar', 3, NULL, 'UTF-8')); // "" Expected result: ---------------- string(3) "bar" string(0) "bar" string(0) "bar" Actual result: -------------- string(3) "bar" string(0) "" string(0) "" -- Edit bug report at http://bugs.php.net/?id=49939&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=49939&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=49939&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=49939&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=49939&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=49939&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=49939&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=49939&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=49939&r=needscript Try newer version: http://bugs.php.net/fix.php?id=49939&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=49939&r=support Expected behavior: http://bugs.php.net/fix.php?id=49939&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=49939&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=49939&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=49939&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49939&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=49939&r=dst IIS Stability: http://bugs.php.net/fix.php?id=49939&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=49939&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=49939&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=49939&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=49939&r=mysqlcfg