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Bug #80656 str_contains() asserts that string contains null and empty string
Submitted: 2021-01-22 05:52 UTC Modified: 2021-01-22 06:13 UTC
From: artyomnsk2012 at gmail dot com Assigned:
Status: Not a bug Package: Strings related
PHP Version: 8.0.1 OS: Windows 7
Private report: No CVE-ID: None
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 [2021-01-22 05:52 UTC] artyomnsk2012 at gmail dot com 
Description:
------------
str_contains() asserts that 'test' string contains null   
str_contains() asserts that 'test' string contains empty string

php -r "var_dump(str_contains('test', null));"
bool(true)

php -r "var_dump(str_contains('test', ''));"
bool(true)

Test script:
---------------
var_dump(str_contains('test', null));
var_dump(str_contains('test', ''));


Expected result:
----------------
In test script I expect to see false value for both code lines

Actual result:
--------------
In test script I see true value for both code lines

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 [2021-01-22 06:13 UTC] requinix@php.net
-Status: Open +Status: Not a bug -Package: Unknown/Other Function +Package: Strings related
 [2021-01-22 06:13 UTC] requinix@php.net 
> str_contains() asserts that 'test' string contains null
Without strict_types, null will be implicitly converted to an empty string.
See also https://wiki.php.net/rfc/deprecate_null_to_scalar_internal_arg

> str_contains() asserts that 'test' string contains empty string
https://www.php.net/manual/en/function.str-contains.php
 
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