PHP gd library implements remote image downloading

/**
* Remote picture download
* by bbs.it-home.org
*/
header("Content-type:text/html ; charset=utf-8");

if (!empty($_POST['submit '])){
 $url = $_POST['url'];
 $pictureName = $_POST['pictureName'];
 $img = getPicture($url,$pictureName);
 echo '&lt ;img src="'.$img.'">';
}
function getPicture($url,$pictureName){
 if ($url == "") return false;
 // Get the extension of the image
 $info = getimagesize($url);
 $mime = $info['mime'];
 $type = substr(strrchr($mime,'/'), 1);
 //different Choose different image generation and saving functions for the image type
 switch($type){
 case 'jpeg':
 $img_create_func = 'imagecreatefromjpeg';
 $img_save_func = 'imagejpeg';
 $new_img_ext = 'jpg';
 break ;
 case 'png':
 $img_create_func = 'imagecreatefrompng';
 $img_save_func = 'imagepng';
 $new_img_ext = 'png';
 break;
 case 'bmp':
 $img_create_func = 'imagecreatefrombmp';
 $ img_save_func = 'imagebmp';
 $new_img_ext = 'bmp';
 break;
 case 'gif':
 $img_create_func = 'imagecreatefromgif';
 $img_save_func = 'imagegif';
 $new_img_ext = 'gif';
 break;
 case 'vnd.wap.wbmp':
 $img_create_func = 'imagecreatefromwbmp';
 $img_save_func = 'imagewbmp';
 $new_img_ext = 'bmp';
 break;
 case 'xbm':
 $img_create_func = 'imagecreatefromxbm' ;
 $img_save_func = 'imagexbm';
 $new_img_ext = 'xbm';
 break;
 default:
 $img_create_func = 'imagecreatefromjpeg';
 $img_save_func = 'imagejpeg';
 $new_img_ext = 'jpg';
 }
 if ($pictureName == ""){
 $pictureName = time().".{$new_img_ext}";
 }else{
 $pictureName = $pictureName.".{$new_img_ext}";
 }
 $src_im +
2. Web content part

File name:

Copy the code
3. The running result is as follows: (The picture is automatically saved in the current file directory)