Bug #74313 [Opn->Nab]: Problem from array_diff function

Edit report at https://bugs.php.net/bug.php?id=74313&edit=1 ID: 74313 Updated by: requinix@php.net Reported by: dominik dot kolinski at gmail dot com Summary: Problem from array_diff function -Status: Open +Status: Not a bug Type: Bug Package: Arrays related Operating System: CentOS 7 PHP Version: 5.6.30 Block user comment: N Private report: N New Comment: Sorry, but your problem does not imply a bug in PHP itself. For a list of more appropriate places to ask for help using PHP, please visit http://www.php.net/support.php as this bug system is not the appropriate forum for asking support questions. Due to the volume of reports we can not explain in detail here why your report is not a bug. The support channels will be able to provide an explanation for you. Thank you for your interest in PHP. http://php.net/manual/en/function.array-diff.php > ...returns the values in array1 that are not present in any of the other arrays https://3v4l.org/OmoMT With your sample data the function is working correctly. If $diff == $array_1 then that means $array_2 does not contain any duplicate values of $array_1, or is empty. Previous Comments: ------------------------------------------------------------------------ [2017-03-26 00:12:22] dominik dot kolinski at gmail dot com Description: ------------ Hello, i have a problem from array_diff function. I have a two dynamic arrays, which are a power from mysql. Which they have four different values: 4415, 4416,4417, and 4418. Unfortunately, using this feature (array_diff) has a bad output. (Return bad output) Function returns the full contents of the first array Instead of a difference. Please inform me what may be wrong. Regards, Dominik Koliński. This exemple topic in my .pl developer's forum: http://www.elektroda.pl/rtvforum/topic3323198.html?sid=c6056d33afbbf8b9e97f904d623082f4 Array_one : Array ( [0] => 4413 [1] => 4414 [2] => 13020 [3] => 13022 [4] => 4801 [5] => 4802 [6] => 4809 [7] => 11204 [8] => 14201 [9] => 14202 [10] => 14203 [11] => 12303 [12] => 12304 [13] => 10113 [14] => 10302 [15] => 10307 [16] => 4 [17] => 10404 [18] => 10502 [19] => 10701 [20] => 10704 [21] => 10801 [22] => 11006 [23] => 11201 [24] => 11305 [25] => 11310 [26] => 11605 [27] => 11702 [28] => 11705 [29] => 11707 [30] => 11803 } And Array second: Array ( [0] => 4413 [1] => 4414 [2] => 13020 [3] => 13022 [4] => 4801 [5] => 4802 [6] => 4809 [7] => 11204 [8] => 14201 [9] => 14202 [10] => 14203 [11] => 12303 [12] => 12304 [13] => 10113 [14] => 10302 [15] => 10307 [16] => 4 [17] => 10404 [18] => 10502 [19] => 10701 [20] => 10704 [21] => 10801 [22] => 11006 [23] => 11201 [24] => 11305 [25] => 11310 [26] => 11605 [27] => 11702 [28] => 11705 [29] => 11707 [30] => 11803 [31] => 4415 [32] => 4416 [33] => 4417 [34] => 4418 } Test script: --------------- This example from my code: $query_select_id_1 = mysql_query("SELECT id FROM tabela1 where id <> 0") or die("Zapytanie niepoprawne"); while($select_id_1 = mysql_fetch_assoc($query_select_id_1)){ $array_1[] = $select_id_1['id']; } $query_select_id_2 = mysql_query("SELECT id FROM tabela2 where id <> 0") or die("Zapytanie niepoprawne"); while($select_id_2 = mysql_fetch_assoc($query_select_id_2)){ $array_2[] = $select_id_2['id']; } $diff = array_diff($array_1, $array_2); print_r($diff); ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=74313&edit=1