Doc #71892 [NEW]: substr: returns false if len === start, not just len < start

From: fredemmott Operating system: n/a PHP version: 7.0.5RC1 Package: Documentation problem Bug Type: Documentation Problem Bug description:substr: returns false if len === start, not just len < start Description: ------------ "If string is less than start characters long, FALSE will be returned." - 'less than' should be 'less than or equal to' Test script: --------------- <?php var_dump(substr('a', 0, 2)); // string(1) "a" var_dump(substr('', 0, 2)); // bool(false) var_dump(substr('a', 1)); // bool(false) Expected result: ---------------- Based on the documentation, string(1) "a", string(0) "", string(0) "" Actual result: -------------- string(1) "a" bool(false) bool(false) -- Edit bug report at https://bugs.php.net/bug.php?id=71892&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71892&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71892&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71892&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=71892&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=71892&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=71892&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=71892&r=needscript Try newer version: https://bugs.php.net/fix.php?id=71892&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=71892&r=support Expected behavior: https://bugs.php.net/fix.php?id=71892&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=71892&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=71892&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=71892&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71892&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=71892&r=dst IIS Stability: https://bugs.php.net/fix.php?id=71892&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=71892&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=71892&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=71892&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=71892&r=mysqlcfg