php动态生成缩略图并输出显示的方法_PHP教程

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$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

$width = ($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);

?>