PHP提示Deprecated: mysql_connect(): The mysql extension is deprecated的解决方法

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function connectit () {

global $CFG;

mysql_connect($CFG[‘db_host‘], $CFG[‘db_user‘], $CFG[‘db_pass‘]) or die(mysql_error());

mysql_select_db($CFG[‘db_name‘]);

}

$dbh = new PDO(‘mysql:host=localhost;dbname=test‘, $user, $pass);

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$link = mysqli_connect(

 ‘localhost‘, /* The host to connect to 连接MySQL地址 */

 ‘user‘,   /* The user to connect as 连接MySQL用户名 */

 ‘password‘, /* The password to use 连接MySQL密码 */

 ‘world‘);  /* The default database to query 连接数据库名称*/

if (!$link) {

  printf("Can‘t connect to MySQL Server. Errorcode: %s ", mysqli_connect_error());

  exit;

}