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@ 2015-04-19T19:48:39Z

<?php

$php = "";

$i = 0;

function f() {
    global $i;
    $i++;
    if($i > 5) {
        return 'i';
    }
    return "\${" . f() . "}";
}

var_dump(f());

eval(f());

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

66.89 ms | 402 KiB | 5 Q