index.php
<?php
$width=800;
$height=600;
//绘图技术 基本步骤 前提:在php.ini文件中启用gd库
//创建画布 默认背景是黑色的
$img=imagecreatetruecolor($width,$height);
//绘制各种图形
//创建一个颜色
$background = imagecolorallocate($img, 255, 0, 0);
//画圆
imageellipse($img,60,100,50,50,$background);
//椭圆
imageellipse($img,60,180,50,30,$background);
//画直线
imageline($img,0,0,$width,$height,$background);
//画矩形
imagerectangle ($img, 400 , 200 , 600 , 80 , $background);
//填充矩形
imagefilledrectangle ($img, 400 , 400 , 600 , 300 , $background);
//画弧线
imagearc($img, 100, 300, 150, 150, 180, 270, $background);
//画扇型 IMG_ARC_CHORD直线连接了起始和结束点 IMG_ARC_PIE
imagefilledarc($img, 100, 400, 150, 150, 180, 270, $background,IMG_ARC_PIE);
//拷贝图片到画布
$scrImg=imagecreatefromgif('http://www.baidu.com/img/shouye_b5486898c692066bd2cbaeda86d74448.gif');
$scrImgInfo=getimagesize('http://www.baidu.com/img/shouye_b5486898c692066bd2cbaeda86d74448.gif');
imagecopy ($img,$scrImg,10,450,0,0,$scrImgInfo[0],$scrImgInfo[1]);
//imagecopy ($img,$scrImg,10,10,0,0,270,129);
//写字
imagestring ($img , 5 , 20 , 20 , "hello,world", $background );
//写中文
$str="PHP绘画技术";
imagettftext ($img , 30 , 0 , 200 ,50, $background , "MSYHBD.TTF" , $str);
//输出图像到网页(或者另存为)
header("content-type: image/png");
imagepng($img);
//销毁该图片(释放内存)
imagedestroy($img); //原创链接:https://www.cnblogs.com/qingsong/p/5324515.html
?>