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<?php $array1 = array ( 0 => array ( 'description' => '5390BF675E1464F32202B', 'to_email' => 'test@test.com' ), 1 => array ( 'description' => '5390BF675E1464F32202B', 'to_email' => 'test3@test.com' ), 2 => array ( 'description' => '5390BF675E1464F32202B', 'to_email' => 'testagain@gmail.com' ) ); $array2 = array ( 0 => array ( 'to_email' => 'test@test.com' ), 1 => array ( 'to_email' => 'test3@test.com' ) ); $exclude_ids = array_column($array2, 'to_email', 'to_email'); $output = array_filter($array1, function ($v) use ($exclude_ids) { return !isset($exclude_ids[$v['to_email']]); }); print_r($output);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [2] => Array ( [description] => 5390BF675E1464F32202B [to_email] => testagain@gmail.com ) )

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