Author: David Monllao
MDL-59152 mlbackend_php: Check PHP version
Part of MDL-57791 epic.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=db3252c18d9599a0187c471c5a023bb044d5f684
http://github.com/moodle/moodle/commit/db3252c18d9599a0187c471c5a023bb044d5f684
+ 3.4 en [errorphp7required,mlbackend_php]
+ 3.4 en [pluginname,mlbackend_php]