What are the potential pitfalls of using the getimagesize function in PHP for file size retrieval?

The getimagesize function in PHP can be resource-intensive when used on large images, as it reads the entire image file to determine its size. This can lead to performance issues and slow down the script execution. To avoid this, consider using alternative methods for retrieving file size, such as using the filesize function to directly get the size of the image file without reading its contents.

// Using the filesize function to get the size of the image file
$imagePath = 'path/to/image.jpg';
$fileSize = filesize($imagePath);
echo 'Image file size: ' . $fileSize . ' bytes';