Determining dimensions of an uploaded photo using PHP

I was wondering if it is possible to get an uploaded images dimensions using PHP, so that I could set it as a potrait/landscape image, which would help in making 开发者_StackOverflowthumbnails that don't look awful. Anyone know a way to do this?

Thanks!

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Sure:

list($width, $height) = getimagesize($image_path); 

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Sure, use getimagesize() on your uploaded file.

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Use: getimagesize() function