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GD Create Image Thumb

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  1. <?php 
  2.  
  3. function createThumb($width,$height,$quality,$filename,$newfilename){ 
  4. //@author: zemin 
  5. if (file_exists($newfilename) || is_file($newfilename)) return false; 
  6. $info = getimagesize($filename); 
  7. $types = array( 
  8. 1 => 'gif', 
  9. 2 => 'jpeg', 
  10. 3 => 'png'
  11. ); 
  12. if (!$types[$info[2]]) return false; 
  13. $ratio_orig = $info[0]/$info[1]; 
  14. if ($width/$height > $ratio_orig) { 
  15. $width = $height*$ratio_orig; 
  16. } else { 
  17. $height = $width/$ratio_orig; 
  18. } 
  19. eval(' 
  20. $image_p = imagecreatetruecolor($width, $height); 
  21. $image = imagecreatefrom'.$types[$info[2]].'($filename); 
  22. imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $info[0], $info[1]); 
  23. $result = image'.$types[$info[2]].'($image_p, $newfilename, $quality); 
  24. '); 
  25. return $result; 
  26. } 
  27.  
  28. var_dump(createThumb(500,300,100,'files/test.jpg','test/newThumb.jpg')); 
  29. ?>

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