在服务器端完成图片大小的调整，会比在浏览器的处理有很多的好处。
本文介绍了php如何在服务器端调整图片大小。
代码包括两部分：
imageresizer() is used to process the image loadimage() inserts the image url in a simpler format $ratio_orig) { $width = $height*$ratio_orig; } else { $height = $width/$ratio_orig; } // this resamples the image $image_p = imagecreatetruecolor($width, $height); $image = imagecreatefromjpeg($url); imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig); // output the image imagejpeg($image_p, null, 100); } //works with both post and get $method = $_server['request_method']; if ($method == 'get') { imageresize($_get['url'], $_get['w'], $_get['h']); } elseif ($method == 'post') { imageresize($_post['url'], $_post['w'], $_post['h']); } // makes the process simpler function loadimage($url, $width, $height){ echo 'image.php?url=', urlencode($url) , '&w=',$width, '&h=',$height; }?>
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//above code would be in a file called image.php.//images would be displayed like this: alt=>
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