Bug #80952 [NEW]: Against an empty needle it returns [0] instead of [false]

From: Date: Mon, 12 Apr 2021 16:34:40 +0000
Subject: Bug #80952 [NEW]: Against an empty needle it returns [0] instead of [false]
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-233372@lists.php.net to get a copy of this message
From:             charro at protonmail dot com
Operating system: Linux
PHP version:      8.0.3
Package:          Strings related
Bug Type:         Bug
Bug description:Against an empty needle it returns [0] instead of [false]

Description:
------------
---
From manual page: https://php.net/function.stripos
---
The function returns [0] instead of [false] if it is searched agains an
empty string ''

Prior to PHP 8 the function returned [false]

Test script:
---------------
var_dump( stripos( 'http://example.com',
'' ) );

Expected result:
----------------
false

Actual result:
--------------
0

-- 
Edit bug report at https://bugs.php.net/bug.php?id=80952&edit=1
-- 
Fix committed:                    https://bugs.php.net/fix.php?id=80952&r=fixed
Fixed in release:                 https://bugs.php.net/fix.php?id=80952&r=alreadyfixed
Need backtrace:                   https://bugs.php.net/fix.php?id=80952&r=needtrace
Need Reproduce Script:            https://bugs.php.net/fix.php?id=80952&r=needscript
Try newer version:                https://bugs.php.net/fix.php?id=80952&r=oldversion
Not developer issue:              https://bugs.php.net/fix.php?id=80952&r=support
Expected behavior:                https://bugs.php.net/fix.php?id=80952&r=notwrong
Not enough info:                  https://bugs.php.net/fix.php?id=80952&r=notenoughinfo
Submitted twice:                  https://bugs.php.net/fix.php?id=80952&r=submittedtwice
register_globals:                 https://bugs.php.net/fix.php?id=80952&r=globals
PHP version support discontinued: https://bugs.php.net/fix.php?id=80952&r=phptooold
Daylight Savings:                 https://bugs.php.net/fix.php?id=80952&r=dst
IIS Stability:                    https://bugs.php.net/fix.php?id=80952&r=isapi
Install GNU Sed:                  https://bugs.php.net/fix.php?id=80952&r=gnused
Floating point limitations:       https://bugs.php.net/fix.php?id=80952&r=float
No Zend Extensions:               https://bugs.php.net/fix.php?id=80952&r=nozend
MySQL Configuration Error:        https://bugs.php.net/fix.php?id=80952&r=mysqlcfg


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