What potential pitfalls should be considered when measuring the height and width of an image in PHP?

One potential pitfall when measuring the height and width of an image in PHP is that the image file may not exist or may not be accessible, leading to errors in the measurement process. To avoid this issue, you can use PHP's file_exists() function to check if the image file exists before attempting to measure its dimensions. 

$image_path = 'path/to/image.jpg';

if (file_exists($image_path)) {
    list($width, $height) = getimagesize($image_path);
    echo "Image width: $width, height: $height";
} else {
    echo "Image file does not exist or is not accessible.";
}

Keywords

image processing PHP functions getimagesize file upload error handling

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