Are there any potential pitfalls to be aware of when using PHP to determine image sizes?

One potential pitfall when using PHP to determine image sizes is that the function getimagesize() may not work properly for remote images or images stored in a database. To solve this issue, you can use a combination of cURL to download the image and getimagesizefromstring() to get the image dimensions. 

$url = 'https://www.example.com/image.jpg';

// Download the image using cURL
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$image_data = curl_exec($ch);
curl_close($ch);

// Get the image dimensions
$image_info = getimagesizefromstring($image_data);
$width = $image_info[0];
$height = $image_info[1];

echo "Image width: $width, Image height: $height";

Keywords

image sizes PHP getimagesize() memory usage file handling

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