Ask a master, about the PHP connection database related issues

Ask the master, about the PHP connection database problem
Excuse me master, PHP database connection There are several ways? What is the best way to connect a database? MySQL mysqli PDO ADODB These ways now popular which way, the other ADODB this has no relevant manuals, how to use ADODB?
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Before the PHP5 version, the general is to use the PHP MySQL function to drive the MySQL database, such as mysql_query () function, belongs to process 3, after the PHP5 version, added mysqli function function, in a sense, It is an enhanced version of MySQL system functions, more stable and more efficient and more secure, and mysql_query () corresponding to the Mysqli_query (), belongs to the object-oriented, the operation of the object to drive the MySQL database.

ADODB is a PHP database abstraction library that can support access,sqlserver,oracle and so on.

PDO is a solution to the problem of not unifying database connections.



Reference http://www.iamle.com/archives/1563.html
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At the moment, PDO is the most tangible and official recommendation.
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Baidu a bit so many tutorials.
http://www.baidu.com/s?ie=utf-8&f=8&rsv_bp=1&rsv_idx=1&tn=monline_5_dg&wd=php%20pdo& rsv_pq=ea040e4c0001cae7&rsv_t=2d90qkb4fzmuhnvcxdzz5fmdk%2ffib1q7reavhsvu8uewzrlpxrpddpqi3orwyxcbcfhj& rsv_enter=1&rsv_sug3=4&rsv_sug1=3&rsv_sug2=0&inputt=4590&rsv_sug4=5368

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