php实现的中秋博饼游戏之掷骰子并输出结果功能详解

<?php
class imgDock
{
  public function getImg($num = 0)
  {
    if(!empty($num)){
      header('Content-Type:image/png');
      $img  = imagecreatetruecolor(200, 200);
      $white = imagecolorallocate($img, 255, 255, 255);
      $grey = imagecolorallocate($img, 100, 100, 100);
      $blue = imagecolorallocate($img, 0, 102, 255);
      $red  = imagecolorallocate($img, 255, 0, 0);
      imagefill($img, 0, 0, $white);
      imageline($img, 10, 20, 10, 180, $grey);
      imageline($img, 10, 180, 20, 190, $grey);
      imageline($img, 20, 190, 180, 190, $grey);
      imageline($img, 180, 190, 190, 180, $grey);
      imageline($img, 190, 180, 190, 20, $grey);
      imageline($img, 190, 20, 180, 10, $grey);
      imageline($img, 180, 10, 20, 10, $grey);
      imageline($img, 20, 10, 10, 20, $grey);
      //1/2/3/4/5/6
      switch($num){
        case 1:
          imagefilledarc($img, 100, 100, 50, 50, 0, 0, $blue, IMG_ARC_PIE);
          break;
        case 2:
          imagefilledarc($img, 60, 100, 40, 40, 0, 0 , $red, IMG_ARC_PIE);
          imagefilledarc($img, 140, 100, 40, 40, 0, 0 , $red, IMG_ARC_PIE);
          break;
        case 3:
          imagefilledarc($img, 50, 50, 40, 40, 0, 0 , $blue, IMG_ARC_PIE);
          imagefilledarc($img, 100, 100, 40, 40, 0, 0 , $blue, IMG_ARC_PIE);
          imagefilledarc($img, 150, 150, 40, 40, 0, 0 , $blue, IMG_ARC_PIE);
          break;
        case 4:
          imagefilledarc($img, 50, 50, 40, 40, 0, 0 , $red, IMG_ARC_PIE);
          imagefilledarc($img, 50, 150, 40, 40, 0, 0 , $red, IMG_ARC_PIE);
          imagefilledarc($img, 150, 150, 40, 40, 0, 0 , $red, IMG_ARC_PIE);
          imagefilledarc($img, 150, 50, 40, 40, 0, 0 , $red, IMG_ARC_PIE);
          break;
        case 5:
          imagefilledarc($img, 50, 50, 40, 40, 0, 0 , $blue, IMG_ARC_PIE);
          imagefilledarc($img, 50, 150, 40, 40, 0, 0 , $blue, IMG_ARC_PIE);
          imagefilledarc($img, 100, 100, 40, 40, 0, 0 , $blue, IMG_ARC_PIE);
          imagefilledarc($img, 150, 150, 40, 40, 0, 0 , $blue, IMG_ARC_PIE);
          imagefilledarc($img, 150, 50, 40, 40, 0, 0 , $blue, IMG_ARC_PIE);
          break;
        case 6:
          imagefilledarc($img, 50, 50, 40, 40, 0, 0 , $red, IMG_ARC_PIE);
          imagefilledarc($img, 50, 150, 40, 40, 0, 0 , $red, IMG_ARC_PIE);
          imagefilledarc($img, 100, 50, 40, 40, 0, 0 , $red, IMG_ARC_PIE);
          imagefilledarc($img, 100, 150, 40, 40, 0, 0 , $red, IMG_ARC_PIE);
          imagefilledarc($img, 150, 150, 40, 40, 0, 0 , $red, IMG_ARC_PIE);
          imagefilledarc($img, 150, 50, 40, 40, 0, 0 , $red, IMG_ARC_PIE);
          break;
        default:
          break;
      }
      imagepng($img);
      imagedestroy($img);
    }
  }
}
$num = 0;
if(isset($_GET['num'])){
  $num = intval($_GET['num']);
}
$imgDock = new imgDock();
$imgDock->getImg($num);