Question

我取消注释了我的php.ini文件中的行extension=php_pdo_mysql.dll extension=php_pdo.dll，但我仍然收到错误 Fatal error: Undefined class constant 'MYSQL_ATTR_INIT_COMMAND' 以前的答案都不适合我，我该怎么办？

 $options = array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8'); 
try 
{ $cnx = new PDO("mysql:host={$host};dbname={$dbname};charset=utf8", $username, $password,$options); 
} 
catch(PDOException $ex) 
{  die("Failed to connect to the database: " . $ex->getMessage()); 
}

Answer 1

尝试一次..！

try 
{ 
$cnx = new PDO('mysql:host=localhost;dbname=test', $user, $pass);
} 
catch(PDOException $ex) 
{  die("Failed to connect to the database: " . $ex->getMessage()); 
}

//需要更多

$dbh = new PDO('mysql:host=localhost;dbname=test', $user, $pass, array(
    PDO::ATTR_PERSISTENT => true
));

Rrefer一次：

http://php.net/manual/en/pdo.connections.php

PDO：未定义的类常量'MYSQL_ATTR_INIT_COMMAND'

1 个答案: