簡要談談php中mysql,mysqli,mysqlnd,pdo究竟是什麼.

名詞解釋: 最開始的初學者，每每搞不清mysqli,mysqlnd,pdo究竟是什麼，下面先直接貼出最直觀的名字吧。php MYSQL:This extension is deprecated as of PHP 5.5.0, and has been removed as of PHP 7.0.0. MYSQLI: MySQL Improved Extension MySQLND: MySQL

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