[MySQL] mysql_connect (): The MySQL extension is deprecated and would be a removed in the Future:use mysqli or PDO instead in

from:http://www.ttlsa.com/php/deprecated-mysql-connect/

PHP 5 version, 5.2, 5.3, 5.4, 5.5, afraid to keep up with the times, the new server directly on the 5.5, but the program appears the following error: Deprecated:mysql_connect (): The MySQL extension is Deprecated And will is removed in the Future:use mysqli or PDO instead in, see the meaning is very clear, said mysql_connect This module will be deprecated in the future, please use MYSQLI or PDO instead.

Workaround 1:

Prohibit PHP error

display_errors = On

改为

display_errors = Off

Since this server is for users, sometimes they need to make an error (...). Are for friends, ^_^), can not do this, let them change the program bar, see Program 2.

Workaround 2:

Common PHP syntax to connect MySQL is as follows

<?php

$link= mysql_connect(‘localhost‘, ‘user‘, ‘password‘);

mysql_select_db(‘dbname‘, $link);

改成mysqi

<?php

$link= mysqli_connect(‘localhost‘, ‘user‘, ‘password‘, ‘dbname‘);

MySQL is commonly used to build table SQL as follows

<?php

//  老的

mysql_query(‘CREATE TEMPORARY TABLE `table`‘, $link);

// 新的

mysqli_query($link, ‘CREATE TEMPORARY TABLE `table`‘);

Workaround Three:

Set the alarm level in the PHP program code

<?php

error_reporting(E_ALL ^ E_DEPRECATED);

Deprecated's problem is solved, but it is recommended that you cancel the use of MySQL as soon as possible, all toward mysqli or Mysqlnd and so on. MySQL is really too insecure and too old.

========================================= Complete Test Examples:

<?php//method One: The old method function Test1 () {$con = mysql_connect ("localhost", "root", "123456"), if (! $con) {die (' Could not Connect: '. Mysql_error ());} Elseecho "Open MySQL db success<br/>"; Mysql_close ($con);} Test1 ();//Method Two: New method echo "test2<br>"; function Test2 () {$link = Mysqli_connect ("localhost", "root", "123456", ""); if (! $link) {die (' Could not connect: '. Mysql_error ());} Elseecho "Open MySQL db success<br/>"; Mysqli_close ($link);} Test2 ();? >

Operation Result:

Deprecated:mysql_connect (): The MySQL extension is Deprecated and would be a removed in the Future:use mysqli or PDO Instea D in/users/zcm/work/pocketmu/source/vn/vn0/web/mu/th/t1.php on line 6Open MySQL db successtest2open MySQL db success

[MySQL] mysql_connect (): The MySQL extension is deprecated and would be a removed in the Future:use mysqli or PDO instead in