What steps should be taken to ensure that the Oracle Client is correctly installed and functioning on the system when encountering driver-related errors in PHP?

When encountering driver-related errors in PHP, it is important to ensure that the Oracle Client is correctly installed and functioning on the system. This can be done by checking the Oracle Client installation, verifying the PHP configuration to include the Oracle extension, and ensuring that the necessary Oracle libraries are accessible to PHP. 

// Check if Oracle extension is enabled
if (!extension_loaded('oci8')) {
    die('Oracle extension not enabled');
}

// Connect to Oracle database
$conn = oci_connect('username', 'password', 'localhost/XE');

if (!$conn) {
    $error = oci_error();
    die('Connection failed: ' . $error['message']);
} else {
    echo 'Connected to Oracle database';
}

// Perform database operations here

// Close connection
oci_close($conn);

Keywords

Oracle Client installation driver-related errors PHP system.

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