[libvirt] Create domain using libvirt-php

Hello...! I want to create a new domain using libvirt-php, and after creating I want to start it. I have seen this to create new domain: libvirt_domain_new($conn, $name, $arch, $memMB, $maxmemMB, $vcpus, $iso_image, $disks, $networks, $flags) So in the above sysntax what should I pass in $iso_image? $disk? $networks and $flag?? Please give me a complete example that can solve my problem. Thanks..