How can PHP documentation and examples be utilized to troubleshoot and resolve file upload errors in scripts?

To troubleshoot and resolve file upload errors in scripts using PHP documentation and examples, you can refer to the PHP manual for detailed explanations of file upload functions and error handling. Additionally, you can search for examples or tutorials online to see how others have successfully implemented file uploads in PHP scripts. By understanding the correct syntax and best practices for file uploads in PHP, you can identify and fix any errors in your script.

if ($_FILES['file']['error'] === UPLOAD_ERR_OK) {
    $uploadDir = 'uploads/';
    $uploadFile = $uploadDir . basename($_FILES['file']['name']);

    if (move_uploaded_file($_FILES['file']['tmp_name'], $uploadFile)) {
        echo "File is valid, and was successfully uploaded.";
    } else {
        echo "Upload failed";
    }
} else {
    echo "Error uploading file: " . $_FILES['file']['error'];
}