How can bugs in PHP versions affect MIME type detection for file content?

Bugs in PHP versions can affect MIME type detection for file content by causing incorrect or unreliable results when using functions like `mime_content_type()` or `finfo_file()`. To solve this issue, you can use a more reliable method for MIME type detection, such as using the `fileinfo` extension or manually checking the file signature.

// Function to get MIME type using fileinfo extension
function getMimeType($file) {
    $finfo = finfo_open(FILEINFO_MIME_TYPE);
    $mime = finfo_file($finfo, $file);
    finfo_close($finfo);
    return $mime;
}

// Example of how to use the function
$file = 'example.jpg';
$mime = getMimeType($file);
echo "MIME type of $file is: $mime";