  <?php
  header("content-type","text/html;charset=utf-8");
  /*扇形統(tǒng)計圖*/
  $image = imagecreatetruecolor(100, 100);  /*創(chuàng)建畫布*/
  
  /*設(shè)置畫布需要的顏色*/
  $white = imagecolorallocate($image,0xff,0xff,0xff);
  $gray = imagecolorallocate($image, 0xc0, 0xc0, 0xc0);
  $darkgray = imagecolorallocate($image, 0x90, 0x90, 0x90);
  $navy = imagecolorallocate($image, 0x00, 0x00, 0x80);
  $darknavy = imagecolorallocate($image, 0x00, 0x00, 0x50);
  $red = imagecolorallocate($image, 0xff, 0x00, 0x00);
  $darkred = imagecolorallocate($image, 0x90, 0x00, 0x00);
 
  /*填充背景色*/
  imagefill($image, 0, 0, $white);
 
  /*3D制作*/
  for($i = 60; $i > 50; $i--)
  {
    imagefilledarc($image, 50, $i, 100, 50, -160, 40, $darknavy, IMG_ARC_PIE);
    imagefilledarc($image, 50, $i, 100, 50, 40, 75, $darkgray, IMG_ARC_PIE);
    imagefilledarc($image, 50, $i, 100, 50, 75, 200, $darkred, IMG_ARC_PIE);
  }
  /*畫橢圓弧并填充*/
  imagefilledarc($image, 50, 50, 100, 50, -160, 40, $darknavy, IMG_ARC_PIE);
  imagefilledarc($image, 50, 50, 100, 50, 40, 75, $darkgray, IMG_ARC_PIE);
  imagefilledarc($image, 50, 50, 100, 50, 75, 200, $darkred, IMG_ARC_PIE);
 
  /*畫字符串*/
  imagestring($image, 3, 15, 55, "30%", $white);
  imagestring($image, 3, 45, 35, "60%", $white);
  imagestring($image, 3, 60, 60, "10%", $white);
 
  /*輸出圖像*/
  header("content-type:image/png");
  imagepng($image);
 
  /*釋放資源*/
  imagedestroy($image);
  ?>

效果：

2、對圖片進(jìn)行縮放

  <div>
    <h4>原圖大小</h4>
    <img src="1.png" style="border:1px solid red;">
  </div>
  <?php
  header("content-type","text/html;charset=utf-8");
  
  /*
  *圖片縮放
  *@param string $filename  圖片的url
  *@param int  $width   設(shè)置圖片縮放的最大寬度
  *@param int  $height   設(shè)置圖片縮放的最大高度
  */
  function thumb($filename,$width=130,$height=130)
  {
    /*獲取原圖的大小*/
    list($width_orig,$height_orig) = getimagesize($filename);
 
    /*根據(jù)參數(shù)$width和$height，換算出等比例的高度和寬度*/
    if($width && ($width_orig < $height_orig))
    {
      $width = ($height / $height_orig) * $width_orig;
    }
    else
    {
      $height = ($width / $width_orig) * $height_orig;
    }
 
    /*以新的大小創(chuàng)建畫布*/
    $image_p = imagecreatetruecolor($width, $height);
 
    /*獲取圖像資源*/
    $image = imagecreatefrompng($filename);
 
    /*使用imagecopyresampled縮放*/
    imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
 
    /*保存縮放后的圖片和命名*/
    imagepng($image_p,'test.png');
 
    /*釋放資源*/
    imagedestroy($image_p);
    imagedestroy($image);
  }
  /*調(diào)用函數(shù)*/
  thumb('1.png');
  ?>
  <div>
    <h4>縮放后的大小</h4>
    <img src="test.png" style="border:1px solid red;">
  </div>

效果：