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@ 2021-07-06T14:42:06Z

<?php

function &id(&$var) { return $var; }

function ref() { $a = 1; return $a; } // oops, missing &

var_dump(id(ref()));

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

32.84 ms | 404 KiB | 5 Q