Is there a way to stop PHP from continuing to upload a file once it exceeds the specified size limit, and how do certain web hosts handle file upload limits differently?

To stop PHP from continuing to upload a file once it exceeds the specified size limit, you can use the `upload_max_filesize` and `post_max_size` directives in your php.ini file to set the maximum file upload size. Additionally, you can check the file size in your PHP script before processing the upload to prevent exceeding the limit.

// Check if the uploaded file exceeds the maximum size limit
if ($_FILES['file']['size'] > $maxFileSizeLimit) {
    echo "File size exceeds the limit.";
    exit;
}

// Process the file upload if it is within the limit
// Your file upload processing code here