PDO_mysql驱动程序不起作用

Question

I'm using Apache server on Windows 8, XAMPP 1.8.1, PHP 5.4.7 and MySQL. I've decided to convert my code to PDO.

Checking my phpinfo() it appears that the PDO driver for MySQL is enabled, but I still keep on getting the "could not find driver" error.

Here's the code:

<?php 
//connect to database

$config['db'] = array(
    'host'           => 'localhost',
    'username'       => 'root',
    'password'       => '',
    'dbname'         => 'x'
    );

$db = new PDO("
    pdo_mysql:host=     " .$config['db']['host']. ";
    dbname=             " .$config['db']['dbname']. ";
    username=           " .$config['db']['username'].";
    password=           " .$config['db']['password']."
    ");
?>

And the error:

Fatal error: Uncaught exception 'PDOException' with message 'could not find driver'

Any suggestions?

Answer 1

让我建议您参考手册页并从中获取正确的 DSN字符串示例

Answer 2

如果将DSN前缀从pdo_mysql为mysql怎样？

Answer 3

As manual says link

You should format your dsn in this way: DRIVER:host=YOURHOST;dbname=YOURDB

Also to create the instance you should act like this: $db = new PDO($dsn, $username, $password)

Also I forgot to say (as other users have pointed out) your DRIVER is "mysql" and not pdo_mysql

Answer 4

In the end there were 2 problems with the code:

1. pdo_mysql -> mysql

2. username and password should be passed as variables and not as strings .

The correct code is:

$config['db'] = array(
    'host'           => 'localhost',
    'username'       => 'root',
    'password'       => '',
    'dbname'         => 'x'
    );

$db = new PDO (
    "mysql:host=".$config['db']['host'].";dbname=".$config['db']['dbname']."",
    $config['db']['username'], 
    $config['db']['password'] 
);