php how to read xml data file which contain category and sub category

i am trying read xml file from php and convert data into array here is my xml file code

<template>
    <category name="Good">
        <image name="abc" />
        <image name="xyz" />
    </category>
<category name="Baad">
        <image name="123" />
        <image name="asd" />
    </category>
</template> 

here is my code

$source = 'test.xml';

 // load as string
 $xmlstr = file_get_contents($source);
 $xmlcont = new SimpleXMLElement($xmlstr);
 foreach($xmlcont as $url) 
 {

 }

can you please tell me how i print all data from xml file