- var_dump: documentation ( source)
- preg_match: documentation ( source)
<?php
$s = '17/03/15 10:32 - Résilié - Cisse Diambissy';
$patternAdminName ="/(?<=-[\s\w]+-([\s\w]+)/";
preg_match($patternAdminName, $s, $aMatchesAdminName);
var_dump($aMatchesAdminName);