- unserialize: documentation ( source)
- print_r: documentation ( source)
<?php
$str = 'a:3:{s:6:"config";a:2:{s:6:"siteId";s:7:"9929910";s:10:"templateId";s:3:"229";}s:12:"submitReview";a:1:{s:14:"commonReviewId";s:14:"14996764264114";}s:15:"isAfterApproval";s:1:"1";}';
print_r(unserialize($str));