php：图像处理---立体饼状图

<span><?php
</span><span></span><span>// </span><span宋体'">创建图像
</span>$image <span>= </span><span><em>imagecreatetruecolor</em></span>(<span>600</span>, <span>450</span>);


<span>// </span><span宋体'">分配一些颜色
</span>$white    <span>= </span><span><em>imagecolorallocate</em></span>($image, <span>0xFF</span>, <span>0xFF</span>, <span>0xFF</span>);
$gray     <span>= </span><span><em>imagecolorallocate</em></span>($image, <span>0xC0</span>, <span>0xC0</span>, <span>0xC0</span>);
$darkgray <span>= </span><span><em>imagecolorallocate</em></span>($image, <span>0x90</span>, <span>0x90</span>, <span>0x90</span>);
$navy     <span>= </span><span><em>imagecolorallocate</em></span>($image, <span>0x00</span>, <span>0x00</span>, <span>0x80</span>);
$darknavy <span>= </span><span><em>imagecolorallocate</em></span>($image, <span>0x00</span>, <span>0x00</span>, <span>0x50</span>);
$red      <span>= </span><span><em>imagecolorallocate</em></span>($image, <span>0xFF</span>, <span>0x00</span>, <span>0x00</span>);
$darkred  <span>= </span><span><em>imagecolorallocate</em></span>($image, <span>0x90</span>, <span>0x00</span>, <span>0x00</span>);
$green    <span>= </span><span><em>imagecolorallocate</em></span>($image, <span>0</span>, <span>200</span>, <span>0</span>);

<span>//</span><span宋体'">填充画布背景颜色；
</span><span><em>imagefill</em></span>($image,<span>0</span>,<span>0</span>,$green);

<span>// </span><span宋体'">创建</span><span> 3D </span><span宋体'">效果
</span><span宋体'"></span><span>for </span>($i <span>= </span><span>180</span>; $i <span>> </span><span>150</span>; $i<span>--</span>) {
    <span><em>imagefilledarc</em></span>($image, <span>250</span>, $i, <span>300</span>, <span>150</span>, <span>0</span>, <span>45</span>, $darknavy, IMG_ARC_PIE);
    <span><em>imagefilledarc</em></span>($image, <span>250</span>, $i, <span>300</span>, <span>150</span>, <span>45</span>, <span>75 </span>, $darkgray, IMG_ARC_PIE);
    <span><em>imagefilledarc</em></span>($image, <span>250</span>, $i, <span>300</span>, <span>150</span>, <span>75</span>, <span>360 </span>, $darkred, IMG_ARC_PIE);
}

<span><em>imagefilledarc</em></span>($image, <span>250</span>, <span>150</span>, <span>300</span>, <span>150</span>, <span>0</span>, <span>45</span>, $navy, IMG_ARC_PIE);
<span><em>imagefilledarc</em></span>($image, <span>250</span>, <span>150</span>, <span>300</span>, <span>150</span>, <span>45</span>, <span>75 </span>, $gray, IMG_ARC_PIE);
<span><em>imagefilledarc</em></span>($image, <span>250</span>, <span>150</span>, <span>300</span>, <span>150</span>, <span>75</span>, <span>360 </span>, $red, IMG_ARC_PIE);


<span>// </span><span宋体'">输出图像
</span><span><em>header</em></span>(<span>'Content-type: image/png'</span>);
<span><em>imagepng</em></span>($image);
<span><em>imagedestroy</em></span>($image);
<p><span>?> </span></p><p><span></span></p><p><span><img src="http://image.codes51.com/Article/image/20150817/20150817204632_1662.jpg" alt=""></span></p>
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