Which one is faster and lighter - mysqli & PDO

Question

I am using MySQL with PHP5. I got to know that ancient mysql_* functions are no longer maintained and community has begun the

Answer 1

About Performance

While both PDO and MySQLi are quite fast, MySQLi performs insignificantly faster in benchmarks - ~2.5% for non-prepared statements, and ~6.5% for prepared ones. The MySQL extension was even faster.