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run code in 200+ php & hhvm versions
Bugs & Features
<?php class Profile { public $n; }; $p1 = new Profile(); $p1->n = "Profile #1"; $p2 = new Profile(); $p2->n = "Profile #2"; $p3 = new Profile(); $p3->n = "Profile #3"; $a1 = array($p1, $p2); $a2 = array($p2, $p3); var_dump(array_udiff($a1, $a2, function ($a, $b) { var_dump($a->n, $b->n, $a === $b); return $a === $b ? 0 : 1; }));
based on WEE2g
Output for 7.0.0 - 7.2.0
string(10) "Profile #1" string(10) "Profile #2" bool(false) string(10) "Profile #2" string(10) "Profile #3" bool(false) string(10) "Profile #2" string(10) "Profile #3" bool(false) string(10) "Profile #2" string(10) "Profile #2" bool(true) string(10) "Profile #2" string(10) "Profile #1" bool(false) array(1) { [0]=> object(Profile)#1 (1) { ["n"]=> string(10) "Profile #1" } }
Output for 5.3.19 - 5.6.28
string(10) "Profile #2" string(10) "Profile #1" bool(false) string(10) "Profile #3" string(10) "Profile #2" bool(false) string(10) "Profile #1" string(10) "Profile #2" bool(false) string(10) "Profile #1" string(10) "Profile #3" bool(false) string(10) "Profile #1" string(10) "Profile #2" bool(false) array(2) { [0]=> object(Profile)#1 (1) { ["n"]=> string(10) "Profile #1" } [1]=> object(Profile)#2 (1) { ["n"]=> string(10) "Profile #2" } }