Add apache.get_php_version() convenience function

rattail_fabric/apache.py

@@ -51,6 +51,17 @@ def get_version():
             return float(match.group(1))
 
 
+def get_php_version():
+    """
+    Fetch the version of PHP running on the target system
+    """
+    result = sudo('php --version')
+    if result.succeeded:
+        match = re.match(r'^PHP (\d+\.\d+)\.\d+-', result)
+        if match:
+            return float(match.group(1))
+
+
 def install_wsgi(python_home=None, python3=False):
     """
     Install the mod_wsgi Apache module, with optional ``WSGIPythonHome`` value.