PHP + GD2: How can change resolution of image?

Question

I'm using gd2 lib to work with images. I need to change resolution of image, still I cant find a method for that in a list of methods. How that can be done?

Thank you in advance

score 4 · Accepted Answer · edited Feb 11 '14 at 09:20

4

Use imagecopyresampled:

imagecopyresampled($resizedImg, $srcImg, 0, 0, 0, 0, $resizeWidth, $resizeHeight, $srcWidth, $srcHeight)

edited Feb 11 '14 at 09:20

Blizz

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answered Feb 11 '14 at 09:05

Manu

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I see how an image can be resized with the method, still it's unclear how I can change resolution with it. – Eugeny89 Feb 11 '14 at 09:59
Look at this: [Change Resolution](http://stackoverflow.com/questions/2121890/change-resolution-of-image-from-72-to-25-dpi-in-php) – Manu Feb 11 '14 at 10:02
So the solution is to scale down, and then scale up? – Eugeny89 Feb 11 '14 at 10:22
Yes. Either this or the other way around. I think thats the only way using GD – Manu Feb 11 '14 at 10:27

PHP + GD2: How can change resolution of image?

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