From: friedrich dot lucas at os-cillation dot de
Operating system: Ubuntu 18.04.6 LTS
PHP version: 8.0.12
Package: Unknown/Other Function
Bug Type: Bug
Bug description:ksort generate different results with the same keys in two arrays
Description:
------------
ksort generate different results with the same keys in two arrays under
php with the version 8 or higher.
This case do only occurs in special conditions: array element count, '0'
for array key must exists.
-----
No specific php setup.
Test script:
---------------
// define arrays with the same keys - different key order ('4' and '@'
are swapped)
$array_at = [
'_' => '', 'Y' => '', '0' =>
'', '+' => '', 'X' => '', 'W'
=> '',
'1' => '', '3' => '', '@' =>
'', '4' => '', '5' => '', 'P'
=> '', 'O' =>
'', 'N' => '', 'M' => '', 'L'
=> '', 'K' => '',
];
$array_fr = [
'_' => '', 'Y' => '', '0' =>
'', '+' => '', 'X' => '', 'W'
=> '',
'1' => '', '3' => '', '4' =>
'', '@' => '', '5' => '', 'P'
=> '', 'O' =>
'', 'N' => '', 'M' => '', 'L'
=> '', 'K' => '',
];
ksort($array_at); // sort by key
ksort($array_fr); // sort by key
// expects the same key at the sorted array first position
var_dump(array_slice($array_at, 0, 1)); // result: [0 => '''], but only
'0' is defined as a key
var_dump(array_slice($array_fr, 0, 1)); // result: ['+' => '' ]
Expected result:
----------------
The same keysort output from array_at and array_fr.
(correct output with php7.x)
array(1) {
["+"]=>
string(0) ""
}
array(1) {
["+"]=>
string(0) ""
}
Actual result:
--------------
(wrong output with php8.x)
array(1) {
["+"]=>
string(0) ""
}
array(1) {
[0]=>
string(0) ""
}
--
Edit bug report at https://bugs.php.net/bug.php?id=81556&edit=1
--
Fix committed: https://bugs.php.net/fix.php?id=81556&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=81556&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=81556&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=81556&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=81556&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=81556&r=support
Expected behavior: https://bugs.php.net/fix.php?id=81556&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=81556&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=81556&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=81556&r=globals
PHP version support discontinued: https://bugs.php.net/fix.php?id=81556&r=phptooold
Daylight Savings: https://bugs.php.net/fix.php?id=81556&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=81556&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=81556&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=81556&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=81556&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=81556&r=mysqlcfg