PDO vs MYSQLI

PDO MySQLi

Database support 12 different drivers MySQL only
API OOP OOP + procedural
Connection Easy Easy
Named parameters Yes No
Object mapping Yes Yes
Prepared statements
(client side) Yes No
Performance Fast Fast
Stored procedures Yes Yes

Database Support

PDO:

CUBIRD, mysql server, firebird/interbase, ibm, informix, mysql, oracle, odbc, db2, postgresql, sqlite, 4d

mysqli:

mysql