PDO: switch error reporting to exceptions

classes/db.php

@@ -63,7 +63,7 @@ class Db
 			exit(101);
 		}
 
-		$this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);
+		$this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
 
 		if (DB_TYPE == "pgsql") {
 
@@ -102,4 +102,4 @@ class Db
 
 		return self::$instance->pdo;
 	}
-}
+}
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