php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #76994 in_array/array_search unexpected result
Submitted: 2018-10-10 14:28 UTC Modified: 2018-10-10 14:40 UTC
From: luigi dot gualtieri at gmail dot com Assigned:
Status: Not a bug Package: Arrays related
PHP Version: 7.0.32 OS: WIN + LINUX
Private report: No CVE-ID: None
View Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: luigi dot gualtieri at gmail dot com
New email:
PHP Version: OS:

 

 [2018-10-10 14:28 UTC] luigi dot gualtieri at gmail dot com 
Description:
------------
This is the scenario:

- the needle is a string that starts with a numeric content (eg: "45x")
- haystack contains a numeric item that match the numeric part of the needle (eg: ["23", 34, 45, "abc"]

in_array function returns true and array_search function  returns int(2).



Test script:
---------------
<?php
$needle = '45x';
$haystack =   ["23", 34, 45, "abc"];


//$test = 'g\'"';
//$test_array =   ["g"];

$result = in_array($needle, $haystack  );

var_dump($result);

$result = array_search($needle, $haystack  );

var_dump($result);

Expected result:
----------------
functions have to return false

Actual result:
--------------
in_array: bool(true)
array_search: int(2)

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2018-10-10 14:32 UTC] spam2 at rhsoft dot net 
because you use it wrong

bool in_array ( mixed $needle , array $haystack [, bool $strict = FALSE ] )
http://php.net/manual/en/language.types.type-juggling.php
________________

[harry@rh:/downloads]$ php test.php
bool(true)
bool(false)
________________

[harry@rh:/downloads]$ cat test.php
<?php
$needle = '45x';
$haystack =   ["23", 34, 45, "abc"];

$result = in_array($needle, $haystack);
var_dump($result);

$result = in_array($needle, $haystack, TRUE);
var_dump($result);
 [2018-10-10 14:33 UTC] sjon at hortensius dot net 
this is not a bug, see for example var_dump(45 == '45x');

to work-around this, use the third parameter of both functions: $strict=true
 [2018-10-10 14:40 UTC] peehaa@php.net
-Status: Open +Status: Not a bug
 [2018-10-10 14:40 UTC] peehaa@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php
 
PHP Copyright © 2001-2024 The PHP Group
All rights reserved. 		Last updated: Sat Dec 21 12:01:31 2024 UTC