note 60373 added to function.substr

Be careful when comparing the return value of substr to FALSE. FALSE may be returned even if the output is a valid string. substr("0", 0); // equals "0", comparision with FALSE evaluates to true, because "0" == 0 == FALSE ---- Manual Page -- http://www.php.net/manual/en/function.substr.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+60373 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+60373&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+60373&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+60373&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+60373&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+60373&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+60373&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+60373&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+60373&report=yes Search -- http://master.php.net/manage/user-notes.php