How to resize an image using PHP? [duplicate]

This question already has answers here: Closed 12 years ago.

Possible Duplicate:

Resize a picture to a fixed size

How to res开发者_如何学JAVAize an image in PHP?

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Try the GD and Image functions, or - if you want something more than just that - a library like ImageMagick.

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You may use imagemagick, call it via exec("convert ...") from php, copy it to the desired location and access it.

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You can also do like I do and use a lightweight framework like flourishlib.com where everything is nicely wrapped in a class fImage, example from documentation:

// Saving as a 60 quality JPEG
$image2 = new fImage('./example.gif');
$image2->resize(250, 0);
$image2->saveChanges('jpeg', 60);

It will work with both GD and ImageMagick

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I'm using Image_Transform PEAR package for it. A ready-made thing that's pretty solid at this task.

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You may use codeigniter framework which provides you a lot of tools, including image manipulation. Otherwize, the main idea is to:

• open your picture (jpg for instance) with imagecreatefromjpeg()
• create a new picture using imagecreatetruecolor()
• use imagecopyresampled()
• finally to save it with imagejpeg().

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Here is the code to a Image resize script which i wrote a while back. It resizes the image and keeps the aspect ratio.

This script uses the core GD library to resize. So hopefully your host already got it installed.

I did some fast translation on the documentation from swedish to english. So it might not be perfect.

Hope it works!