How can one troubleshoot connection issues between PHP and a DB2 database?

To troubleshoot connection issues between PHP and a DB2 database, first ensure that the correct credentials (username, password, database name) are being used in the connection string. Check that the necessary DB2 extensions are enabled in PHP. Verify that the DB2 database is running and accessible from the server where PHP is hosted. 

<?php
$dsn = 'ibm:DRIVER={IBM DB2 ODBC DRIVER};DATABASE=mydatabase;HOSTNAME=myhost;PORT=50000;PROTOCOL=TCPIP;';
$user = 'myusername';
$password = 'mypassword';

try {
    $conn = new PDO($dsn, $user, $password);
    echo "Connected to DB2 database successfully";
} catch (PDOException $e) {
    echo "Connection failed: " . $e->getMessage();
}
?>

Keywords

PHP DB2 connection troubleshooting error

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