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@ 2018-09-25T14:43:05Z

<?php

class Haha {
    const HEH='wow';
}

$nest='HEH';
$nest2='nest';
echo constant('Haha::'.$$nest2);

Output
Performance
VLD
References
Branches

constant: documentation ( source)

preferences:dark modelive preview

54.69 ms | 402 KiB | 5 Q