Introduction to PHP drawing technology

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Release: 2016-07-25 08:52:08
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  1. //Basic steps of drawing technology Prerequisite: Enable the gd library in the php.ini file

  2. //Create a canvas with a default background of black
  3. $img=imagecreatetruecolor(400,300) ;
  4. //Draw various graphics
  5. //Create a color
  6. $background = imagecolorallocate($img, 255, 0, 0);
  7. //Draw a circle
  8. //imageellipse($img,30,30,50,50 ,$background);
  9. //Ellipse
  10. //imageellipse($img,30,30,50,30,$background);
  11. //Draw a straight line
  12. //imageline($img,0,0,400,300,$background);
  13. //Draw a rectangle
  14. //imagerectangle ($img, 50, 20, 100, 40, $background);
  15. //Fill the rectangle
  16. //imagefilledrectangle ($img, 50, 20, 100, 40, $background);
  17. //Draw an arc
  18. //imagearc($img, 100, 100, 150, 150, 180, 270, $background);
  19. //Draw a fan-shaped IMG_ARC_CHORD straight line connecting the starting and ending points IMG_ARC_PIE
  20. //imagefilledarc ($img, 100, 100, 150, 150, 180, 270, $background,IMG_ARC_PIE);

  21. //Copy the image to the canvas

  22. /*$scrImg=imagecreatefromgif('http:/ /www.baidu.com/img/shouye_b5486898c692066bd2cbaeda86d74448.gif');
  23. $scrImgInfo=getimagesize('http://www.baidu.com/img/shouye_b5486898c692066bd2cbaeda86d74448.gif');
  24. imagecopy ($img,$scrImg,10 ,10,0,0,$scrImgInfo[0],$scrImgInfo[1]);
  25. */
  26. //imagecopy ($img,$scrImg,10,10,0,0,270,129);

  27. < ;p>//Write words
  28. //imagestring ($img, 5, 20, 20, "hello,world", $background);
  29. //Write Chinese
  30. $str="PHP painting technology";
  31. imagettftext ($img , 30 , 0 , 50 ,50, $background , "MSYHBD.TTF" , $str);
  32. //Output the image to the web page (or save it as)
  33. header("content-type: image/png");
  34. imagepng ($img);
  35. //Destroy the image (release memory)
  36. imagedestroy($img);
  37. ?>

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