What potential problems can arise when parsing <img/> tags and extracting width and height attributes for image scaling in PHP?

When parsing <img/> tags and extracting width and height attributes for image scaling in PHP, potential problems can arise if the attributes are not present or are incorrectly formatted. To solve this, you can use PHP's getimagesize() function to retrieve the width and height of an image file directly, rather than relying on parsing HTML tags.

// Example of using getimagesize() to retrieve image dimensions
$imagePath = 'path/to/image.jpg';
list($width, $height) = getimagesize($imagePath);

echo "Width: $width, Height: $height";