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@ 2018-06-29T12:57:44Z

<?php

$d = 201511;

$year = substr($d,0,4);
$month = substr($d,-2);

$reverse = $month.$year;
echo $reverse;

Output
Performance
VLD
References
Branches

substr: documentation ( source)

preferences:dark modelive previewkey bindings

32.77 ms | 404 KiB | 5 Q