Bug->Doc #80148 [Opn->Ver]: ctype_* functions silently return false for unsupported types

Edit report at https://bugs.php.net/bug.php?id=80148&edit=1 ID: 80148 Updated by: cmb@php.net Reported by: d dot penning at stroeermediabrands dot de Summary: ctype_* functions silently return false for unsupported types -Status: Open +Status: Verified -Type: Bug +Type: Documentation Problem Package: Unknown/Other Function PHP Version: 7.2.33 Block user comment: N Private report: N New Comment: That's actually a documentation issue: there is special support for int arguments: <https://github.com/php/php-src/blob/php-7.3.22/ext/ctype/ctype.c#L150-L159>. Previous Comments: ------------------------------------------------------------------------ [2020-09-25 09:27:42] d dot penning at stroeermediabrands dot de Description: ------------ According to the documentation the ctype functions only accept strings as arguments. Passing any type that is not supported only returns false and does not throw any warning or TypeError. Setting declare(strict_types = 1); also has no effect on this. Test script: --------------- ctype_digit(1); Expected result: ---------------- A warning or error hinting that an unsupported type was passed to a ctype function. Actual result: -------------- false ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=80148&edit=1