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<?php $ar1 = array( (object) array('id' => '1505', 'category' => 'blue'), (object) array('id' => '1805', 'category' => 'red') ); $ar2 = array( '1777' => (object) array('id' => '1505', 'category' => 'yellow'), '1877' => (object) array('id' => '1507', 'category' => 'blue'), ); $ids = array_column($ar1, 'id'); $ar3 = array_merge_recursive($ar1, array_filter($ar2, function($x) use ($ids) { return !in_array($x->id, $ids); })); print_r($ar3);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => stdClass Object ( [id] => 1505 [category] => blue ) [1] => stdClass Object ( [id] => 1805 [category] => red ) [2] => stdClass Object ( [id] => 1507 [category] => blue ) )

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