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@ 2014-07-25T06:02:45Z

<?php
$a = 1;

function f1() {
    $b = 2;

    function f2() {
        var_dump($a, $b);
    }

    f2();
}

f1();

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

41.91 ms | 402 KiB | 5 Q