Getting elements within nodes in xml via php

Content

Hello,

I have the following reponse in xml format:

<n0:Rows>
                     <n0:Row>Plomberie</n0:Row>
                     <n0:Row>Electricité</n0:Row>
                     <n0:Row>Chauffage / Climatisation / Ventilation</n0:Row>
                     <n0:Row>Admin</n0:Row>
                     <n0:Row>Eclairage</n0:Row>

</n0:Rows>

I used the following code:

 $matches = array();
        preg_match("/<n0:Rows>(.*)?<\/n0:Rows>/", html_entity_decode($xml), $matches);
        return $matches[1];

I was able to obtain the following:

                     <n0:Row>Plomberie</n0:Row>
                     <n0:Row>Electricité</n0:Row>
                     <n0:Row>Chauffage / Climatisation / Ventilation</n0:Row>
                     <n0:Row>Admin</n0:Row>
                     <n0:Row>Eclairage</n0:Row>

But i can not separate the elements from the nodes. I have try using DOM and SIMPLEXML. They don't work in my script. How to get the elements? Please note that the number of nodes are not definite. Thanks.