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php gd implements downloading pictures

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Release： 2016-07-25 08:51:12
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  1. header("Content-type:text/html ; charset=utf-8");
  3. if (!empty($_POST['submit'])){
  4. $url = $ _POST['url'];
  5. $pictureName = $_POST['pictureName'];
  6. $img = getPicture($url,$pictureName);
  7. echo '
    <img src="'.$img. '">
    ';
  8. }
  9. function getPicture($url,$pictureName){
  10. if ($url == "") return false;
  11. //Get the extension of the picture
  12. $info = getimagesize ($url);
  13. $mime = $info['mime'];
  14. $type = substr(strrchr($mime,'/'), 1);
  15. //Choose different image generation and saving for different image types Function
  16. switch($type){
  17. case 'jpeg':
  18. $img_create_func = 'imagecreatefromjpeg';
  19. $img_save_func = 'imagejpeg';
  20. $new_img_ext = 'jpg';
  21. break;
  22. case 'png':
  23. $img_create_func = 'imagecreatefrompng';
  24. $img_save_func = 'imagepng';
  25. $new_img_ext = 'png';
  26. break;
  27. case 'bmp':
  28. $img_create_func = 'imagecreatefrombmp';
  29. $img_save_func = 'imagebmp';
  30. $new_img_ext = 'bmp';
  31. break;
  32. case 'gif':
  33. $img_create_func = 'imagecreatefromgif';
  34. $img_save_func = 'imagegif';
  35. $new_img_ext = 'gif';
  36. break;
  37. case 'vnd.wap.wbmp':
  38. $img_create_func = 'imagecreatefromwbmp';
  39. $img_save_func = 'imagewbmp';
  40. $new_img_ext = 'bmp';
  41. break;
  42. case 'xbm':
  43. $img_create_func = 'imagecreatefromxbm';
  44. $img_save_func = 'imagexbm ';
  45. $new_img_ext = 'xbm';
  46. break;
  47. default:
  48. $img_create_func = 'imagecreatefromjpeg';
  49. $img_save_func = 'imagejpeg';
  50. $new_img_ext = 'jpg';
  51. }
  52. if ($pictureName == ""){
  53. $pictureName = time().".{$new_img_ext}";
  54. }else{
  55. $pictureName = $pictureName.".{$new_img_ext}";
  56. }
  57. $src_im = $img_create_func($url); // Create a new picture from url
  58. $img_save_func($src_im, $pictureName); //Output file to file
  59. return $pictureName;
  60. }
  62. ?>
  64. Remote url address:
  65. File name:
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php gd实现下载图片
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