Doc #60949 [NEW]: The documentation about the return value is not clear!

From: Operating system: PHP version: Irrelevant Package: *General Issues Bug Type: Documentation Problem Bug description:The documentation about the return value is not clear! Description: ------------ --- From manual page: http://www.php.net/function.substr#refsect1-function.substr-returnvalues --- "Returns the extracted part of string, or FALSE on failure or an empty string." Question: Does it return and empty string on failure, or when it doesn't find a string??? -- Edit bug report at https://bugs.php.net/bug.php?id=60949&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=60949&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=60949&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=60949&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=60949&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=60949&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=60949&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=60949&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=60949&r=needscript Try newer version: https://bugs.php.net/fix.php?id=60949&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=60949&r=support Expected behavior: https://bugs.php.net/fix.php?id=60949&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=60949&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=60949&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=60949&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=60949&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=60949&r=dst IIS Stability: https://bugs.php.net/fix.php?id=60949&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=60949&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=60949&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=60949&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=60949&r=mysqlcfg