Allow PDO option aliases (phalcon#13080)

* Allow PDO option aliases

See phalcon#13010

* fixing syntax error

phalcon/db/adapter/pdo.zep

@@ -128,6 +128,16 @@ abstract class Pdo extends Adapter
 			let options = [];
 		}
 
+		/**
+		 * Check for \PDO::XXX class constant aliases
+		 */
+        for key, value in options {
+            if typeof key == "string" && defined("\PDO::" . key->upper()) {
+                let options[constant("\PDO::" . key->upper())] = value;
+                unset options[key];
+            }
+        }
+
 		/**
 		 * Check if the connection must be persistent
 		 */