Resize an Image

This example takes a local image, resizes it and saves the result under a new name.

The source code:
<? //Resize the following jpg image $filename='/pathtoyourimage.jpg'; $array = getimagesize($filename); $width_orig= $array[0]; $height_orig= $array[1]; //We resize to a max size of 640 either on the width size or height size if($width_orig > $height_orig) $ratio= $width_orig/640; else $ratio=$height_orig/640; $width=$width_orig/$ratio; $height=$height_orig/$ratio; $image_p = imagecreatetruecolor($width, $height); $image = imagecreatefromjpeg($filename); imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig); //Output into another file - 50 is a pecentage of the original quality imagejpeg($image_p,'resized-'.$filename, 50); ?>

Notes:
- there are some functions which require the GD 2.0.1 library or later (2.0.28 or later is recommended);
- you need to have the necessary permissions to be able to write a file on your server (see chmod on linux/unix);
- try this if you wish to verify the GD version: var_dump(gd_info());

You may wish to read additional materials from:
- http://us.php.net/getimagesize
- function.imagecreatetruecolor.php
- function.imagecreatefromjpeg.php
- function.imagecopyresampled.php
- function.imagejpeg.php

Comments

Webmaster Corner

The Millionaire league
Dozens of Easy and Automatic Ways to Make Money Online Everyday!

Niche Annihilation Method
Crush Your Competition!
Download the method Now

iPowerWeb
Incredible Membership Packages - Web Hosting!

One Month Free Trial! ProStores - an eBay Company
Gain customers, increase sales, and boost profits with your own Web Store.

→ Get Google Pay-Per-Click Ads Free!
→ Automated Cash Formula $$$

Categories

• ASP
• CSS
• Flash
• Html
• Java
• Javascript
• PHP
  • SEO
  • Data Mining
  • Graphism
  • Network
  • User Management
  • File I/O
  • XML/RSS
• Python
• Perl
• Ruby
• Xml