调用方法:
此代码可以为大图片动态生成缩略图显示,图片在内存中生成,不在硬盘生成真实文件
<?php /* File: thumbs.php Example: <img src="thumbs.php?filename=photo.jpg&width=100&height=100"> */ $filename= $_GET['filename']; $width = $_GET['width']; $height = $_GET['height']; $path="http://localhost/images/"; //finish in "/" // Content type header('Content-type: image/jpeg'); // Get new dimensions list($width_orig, $height_orig) = getimagesize($path.$filename); if ($width && ($width_orig < $height_orig)) { $width = ($height / $height_orig) * $width_orig; } else { $height = ($width / $width_orig) * $height_orig; } // Resample $image_p = imagecreatetruecolor($width, $height); $image = imagecreatefromjpeg($path.$filename); imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig); // Output imagejpeg($image_p, null, 100); // Imagedestroy imagedestroy ($image_p); ?>