使用 PDO 连接 IBM 数据库
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                        问题描述
I tried connect IBM database through PDO using below code. But, it is not working
try {
    $db = new PDO("odbc:DRIVER={IBM DB2 ODBC DRIVER};DATABASE=BLUDB;HOSTNAME=hostname;PORT=50000;PROTOCOL=TCPIP;", "username", "password");
    echo "<pre>";
    print_r($db);
    exit;
} catch (PDOException $e) {
    echo $e->getMessage();
}
I got below error for the same
SQLSTATE[IM002] SQLDriverConnect: 0 [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
I have also added below code in php.ini file
extension=php_pdo.dll
extension=php_pdo_ibm.dll
extension=php_ibm_db2.dll
Could anyone suggest me, how I can connect with IBM database?
 解决方案 
there is different driver name for some computer, this is the list of driver you can try:
- DRIVER={iSeries Access ODBC Driver};
 - DRIVER={IBM i Access ODBC Driver};
 
and try to use System instead of HOSTNAME  
DRIVER={iSeries Access ODBC Driver};DATABASE=BLUDB;System=hostname;PORT=50000;PROTOCOL=TCPIP;
oh, and I'm using DRIVER={IBM i Access ODBC Driver};
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