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@ 2020-08-05T22:55:16Z

<?php

function b() {
    global $a;
    $a++;
}

global $a;
$a = 2;
b();
var_dump($a);

?>

Output
Performance
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var_dump: documentation ( source)

preferences:dark modelive preview

26.23 ms | 402 KiB | 5 Q