array_diff_assoc < PHP

The array_diff_assoc function compare the keys and values of two arrays, and return the differences.

    
    $colors = array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
    $colors1 = array("a"=>"red","b"=>"green","c"=>"blue");

    $colorsDiff =array_diff_assoc($colors,$colors1);

    print_r($colorsDiff);
    // Array ( [d] => yellow )