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Link: http://codepad.org/OsCt97Hz    [ raw code | output | fork ]

PHP, pasted on Jul 6:
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<?php

    $arr1 = array('potato'=>1,'tomato'=>2,'apple'=>5,'banana'=>10);
    $arr2 = array('orange'=>20,'tomato'=>3,'apple'=>5,'banana'=>20);
    $result = array_keys(array_diff(array_intersect_key($arr1, $arr2), $arr2));
    print_r($result);


Output:
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Array
(
    [0] => tomato
    [1] => banana
)


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