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@ 2015-08-28T21:44:13Z

<?php
foreach (
        preg_split("/\./","2.4.10.71.3698") 
        as $something
        ) 

$value=pow($something,2);

$key            = $value;

echp($key);

Output
Performance
VLD
References
Branches

preg_split: documentation ( source)
pow: documentation ( source)

preferences:dark modelive preview

59.69 ms | 402 KiB | 5 Q