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@ 2015-10-21T12:29:21Z

<?php

$originPiwikVisitorId = null;
        if (preg_match('/([0-9a-zA-Z]*)\..*/g', '3e5035da4a186908.1444637964.6.1445411285.1445411282.', $matches)) {
            $originPiwikVisitorId = array_pop($matches);
        }
        
        echo $originPiwikVisitorId;

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)
array_pop: documentation ( source)

preferences:dark modelive preview

44.39 ms | 402 KiB | 5 Q