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phpresolutiondpi

How to Check Photo DPI with PHP

Possible Duplicate:
Get/set DPI with PHP GD/Imagick?

Is there a possible way to check photo dpi with php. I have 300 dpi and 72 dpi photos. but wants a way to calculate dpi automatically.

Solution

  • It's too late for me to check now but I think you're looking for Imagick::getImageResolution() and Imagick::setImageResolution() if you need to change the DPIs.

    I don't think this is possible with GD, I believe it "converts" all images to 72 DPIs.