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PHP achieves image zoom effect

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2016-07-25 08:54:441122browse
  1. /**

  2. * Images class Image processing class
  3. * @author pan
  4. * @package application.controllers
  5. * @since 1.0
  6. */
  7. class Images
  8. {
  9. /**
  10. * Zoom image
  11. * @param $source original image
  12. * @param $newfile new image
  13. * @param $pre zoom ratio
  14. */
  15. public function thumn($source,$pre,$newfile )
  16. {
  17. //Get the image size
  18. list($s_w,$s_h)=getimagesize($source);
  19. //Generate a new image size
  20. $new_w=$s_w*$pre;
  21. $new_h=$s_h* $pre;

  22. //Create a new image

  23. $new_f=imagecreatetruecolor($new_w, $new_h);
  24. //Create an image with a resource image
  25. $sour_f=imagecreatefromjpeg($source);
  26. //Copy the resource image to a new image
  27. imagecopyresampled($new_f, $sour_f, 0, 0, 0, 0, $new_w, $new_h, $s_w, $s_h);
  28. //Output the image to the browser
  29. imagejpeg( $new_f,$newfile);

  30. imagedestroy($new_f);

  31. imagedestroy($sour_f);
  32. }
  33. }
  34. ?>

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The above is a simple code to implement image scaling in PHP for the reference of beginners.



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