Change dpi of an image from 72 to 96 using php

i want to change dpi of an image from 72 to 96 using GD or php.

开发者_运维知识库

thanks in advance..

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You can set resolution with PHP iMagick:

public function setDPI($DPIX, $DPIY) {

    $this->image->setImageResolution($DPIX,$DPIY);

}