Doc #78934 [Opn]: What do mbstring functions return when they fail?

Edit report at https://bugs.php.net/bug.php?id=78934&edit=1 ID: 78934 Updated by: requinix@php.net Reported by: anthony_rutledge_101 at yahoo dot com -Summary: What does mb_substr() return when it fails? +Summary: What do mbstring functions return when they fail? Status: Open Type: Documentation Problem -Package: Documentation problem +Package: mbstring related PHP Version: Irrelevant Block user comment: N Private report: N New Comment: As with most other PHP functions, if there is some sort of problem then it returns false. Looks like others don't have this documented either. Previous Comments: ------------------------------------------------------------------------ [2019-12-09 00:03:53] anthony_rutledge_101 at yahoo dot com Description: ------------ --- From manual page: https://php.net/function.mb-substr --- Hi. Short and sweet. Would you please add what mb_substr() returns when it fails to the manual page? Thank you. I would have given you the answer, but my PHP 7.2.7 on Windows (legacy) does not have the multi-byte extension installed. I'm moving to PHP 7.4 anyway. Test script: --------------- The manual is the issue, not the function (as far as I know). Still, to save you time. :-) mb_internal_encoding("UTF-8"); $name = "Anthony"; echo $name . "<br>"; $newName = mb_substr($name, 0, 7); echo $newName . "<br>"; $badName = mb_substr($name, 0, 20); echo $badName . "<br>"; $badName = mb_substr($name, 20, 20); echo $badName . "<br>"; ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=78934&edit=1