last update: Mon, 05 Sep 2011 17:21:15 +0000
  1. <?
  2. //create thumbnails
  3. function createthumb($name,$filename,$new_w,$new_h)
  4. {
  5. $system=explode('.',$name);
  7. $src_img = 0;
  9. //echo sizeof($system)."<br />";
  10. //echo "$name<br />";
  11. //echo "size: ".filesize($name)."<br />";
  12. $imagesize = GetImageSize($name);
  13. $realsize = $imagesize[0]*$imagesize[1]*3;
  15. //echo "realsize= $realsize<br />";
  19. if ($realsize < (33554432 / 8))
  20. //if (false)
  21. {
  22. if (preg_match('/jpg|jpeg|JPG/',$system[sizeof($system)-1]))
  23. {
  24. $src_img=@imagecreatefromjpeg($name);
  25. }
  28. if (preg_match('/bmp|BMP/',$system[sizeof($system)-1]))
  29. {
  30. $src_img=@imagecreatefromwbmp($name);
  31. }
  34. if (preg_match('/png|PNG/',$system[sizeof($system)-1]))
  35. {
  36. $src_img=@imagecreatefrompng($name);
  37. }
  39. if (preg_match('/gif|GIF/',$system[sizeof($system)-1]))
  40. {
  41. $src_img=@imagecreatefromgif($name);
  42. }
  44. if ($src_img)
  45. {
  46. $old_x=imageSX($src_img);
  47. $old_y=imageSY($src_img);
  49. if ($old_x > $old_y)
  50. {
  51. $thumb_w=$new_w;
  52. $thumb_h=$old_y*($new_h/$old_x);
  53. }
  55. if ($old_x < $old_y)
  56. {
  57. $thumb_w=$old_x*($new_w/$old_y);
  58. $thumb_h=$new_h;
  59. }
  61. if ($old_x == $old_y)
  62. {
  63. $thumb_w=$new_w;
  64. $thumb_h=$new_h;
  65. }
  67. $dst_img=ImageCreateTrueColor($thumb_w,$thumb_h);
  68. imagecopyresampled($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y);
  70. if (preg_match("/png/",$system[1]))
  71. {
  72. imagepng($dst_img,$filename);
  73. }
  74. if (preg_match("/gif/",$system[1]))
  75. {
  76. imagegif($dst_img,$filename);
  77. }
  79. else
  80. {
  81. imagejpeg($dst_img,$filename);
  82. }
  84. imagedestroy($dst_img);
  85. imagedestroy($src_img);
  86. return true;
  87. }
  88. else {
  89. //echo "could not create image<br />";
  90. }
  91. }
  92. else {
  93. if ($realsize < 5000*5000) {
  94. //echo "image to big ($realsize)<br />";
  95. //echo "./exec/convert -thumbnail ".escapeshellcmd($new_w)." ".escapeshellcmd($name)." ".escapeshellcmd($filename)."<br>";
  96. exec("./exec/convert -thumbnail ".escapeshellcmd($new_w)."x".escapeshellcmd($new_h)." ".escapeshellcmd($name)." ".escapeshellcmd($filename)."");
  97. return true;
  98. }
  99. }
  100. return false;
  101. }
  102. ?>

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