Added mobile number validation functionality

booking.helper.inc

@@ -101,6 +101,18 @@ function _valid_phone_number($input)
     */
 }
 
+function _valid_australian_mobile_number($input)
+{
+    if (preg_match('/^\s*(?:\+61|61|0061|0)(\d{3})\s*(\d{3})\s*(\d{3})\s*$/', $input, $matches))
+    {
+      watchdog('booking', 'Australian Mobile Number "!passnum" validates since it passed our regexp',
+              array('!passnum' => $input));	
+			return TRUE;								
+    } 
+		else
+			return FALSE;
+}
+
 
 /**
  * Helper function to check whether the number of registrations for the current event have reached their defined maximum size