1、利用php gd库的函数绘制3D扇形统计图
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<?phpheader("content-type","text/html;charset=utf-8");/*扇形统计图*/$image = imagecreatetruecolor(100, 100); /*创建画布*//*设置画布需要的颜色*/$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, $darkred, IMG_ARC_PIE);}/*画椭圆弧并填充*/imagefilledarc($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, $darkred, IMG_ARC_PIE);/*画字符串*/imagestring($image, 3, 15, 55, "30%", $white);imagestring($image, 3, 45, 35, "60%", $white);imagestring($image, 3, 60, 60, "10%", $white);/*输出图像*/header("content-type:image/png");imagepng($image);/*释放资源*/imagedestroy($image);?> |
效果：
2、对图片进行缩放
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<div> <h4>原图大小</h4> <img src="1.png" style="border:1px solid red;"></div><?phpheader("content-type","text/html;charset=utf-8");/**图片缩放*@param string $filename 图片的url*@param int $width 设置图片缩放的最大宽度*@param int $height 设置图片缩放的最大高度*/function thumb($filename,$width=130,$height=130){ /*获取原图的大小*/ list($width_orig,$height_orig) = getimagesize($filename); /*根据参数$width和$height，换算出等比例的高度和宽度*/ if($width && ($width_orig < $height_orig)) { $width = ($height / $height_orig) * $width_orig; } else { $height = ($width / $width_orig) * $height_orig; } /*以新的大小创建画布*/ $image_p = imagecreatetruecolor($width, $height); /*获取图像资源*/ $image = imagecreatefrompng($filename); /*使用imagecopyresampled缩放*/ imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig); /*保存缩放后的图片和命名*/ imagepng($image_p,'test.png'); /*释放资源*/ imagedestroy($image_p); imagedestroy($image);}/*调用函数*/thumb('1.png');?><div> <h4>缩放后的大小</h4> <img src="test.png" style="border:1px solid red;"></div> |
效果：
