php requirements change

git-svn-id: https://plugins.svn.wordpress.org/zanto/trunk@823108 b8457f37-d9ea-0310-8a92-e5e31aec5664
requirments

git-svn-id: https://plugins.svn.wordpress.org/zanto/trunk@823154 b8457f37-d9ea-0310-8a92-e5e31aec5664