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@ 2014-10-22T06:10:23Z

<?php

$a1 = array(
    'one',
    'two',
    'three',
    'four'
);
$a2 = array_diff(
    $a1,
    array(
        'one',
        'two',
        'three',
        'four'
    )
);

$a3 = $a2;
$a3[] = 'five';

print_r($a3);

Output
Performance
VLD
References
Branches

print_r: documentation ( source)
array_diff: documentation ( source)

preferences:dark modelive preview

31.23 ms | 402 KiB | 5 Q