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<?php $obj1 = new stdClass(); $obj1->attr = 'Rod'; $obj2 = new stdClass(); $obj2->attr = 'Jane'; $obj3 = new stdClass(); $obj3->attr = 'Freddy'; $array1 = array( $obj1, $obj2, ); $array2 = array( $obj1, $obj3, ); $diff1 = array_udiff($array1, $array2, function($a,$b) { if ($a->attr == $b->attr) { return 0; } else { return -1; } }); $diff2 = array_udiff($array1, $array2, function($a,$b) { if ($a->attr == $b->attr) { return 0; } else { return 1; } }); var_dump($diff1); var_dump($diff2);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array(1) { [1]=> object(stdClass)#2 (1) { ["attr"]=> string(4) "Jane" } } array(2) { [0]=> object(stdClass)#1 (1) { ["attr"]=> string(3) "Rod" } [1]=> object(stdClass)#2 (1) { ["attr"]=> string(4) "Jane" } }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(1) { [1]=> object(stdClass)#2 (1) { ["attr"]=> string(4) "Jane" } } array(2) { [0]=> object(stdClass)#1 (1) { ["attr"]=> string(3) "Rod" } [1]=> object(stdClass)#2 (1) { ["attr"]=> string(4) "Jane" } }
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
array(2) { [0]=> object(stdClass)#1 (1) { ["attr"]=> string(3) "Rod" } [1]=> object(stdClass)#2 (1) { ["attr"]=> string(4) "Jane" } } array(1) { [1]=> object(stdClass)#2 (1) { ["attr"]=> string(4) "Jane" } }

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