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@ 2014-05-11T15:08:09Z

<?php
$var = 'PHP5';
$s = 'Vive $var';
$s = substr($s, -3);
echo $$s;

Output
Performance
VLD
References
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substr: documentation ( source)

preferences:dark modelive preview

35.92 ms | 402 KiB | 5 Q