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@ 2013-11-20T05:30:38Z

<?php
$array1 = array(1,2,2,2,2,3,4,5,6,7);
$array2 = array(3,4,2,2,2,7,8,9,10);

foreach($array1 as $value)
{
    if (in_array($value,$array2) && !in_array($value,$output["greens"]))
    {
         $output["greens"][]=$value;
    }
    else
    {
        $output["reds"][]=$value;
    }
}

print_r($output);

Output
Performance
VLD
References
Branches

print_r: documentation ( source)
in_array: documentation ( source)

preferences:dark modelive preview

36.94 ms | 402 KiB | 5 Q