007-PHP GD drawing process

The content of this article is the GD drawing process of PHP. Now I share it with everyone. Friends in need can take a look

<?php
/**
 * GD库画图流程
 *      1. 新建空白画布(指定宽高)
 *      2. 创建颜料
 *      3. 画图形(椭圆,矩形,直线等),或写字
 *      4. 输出/保存图形
 *      5. 销毁画布(关闭画板)
 * 填充颜色注意事项：
 *      1.在画图之前填充的是整个背景色
 *      2.在画图之后填充，需要找准对应的坐标以填充
 *
 */

//1. 新建空白画布(指定宽高)
$pic = imagecreatetruecolor(200, 300);

//2. 创建颜料（RGB）
$red = imagecolorallocate($pic, 255, 0, 0);
$blur = imagecolorallocate($pic, 0,0,255);

//3. 画图形(椭圆,矩形,直线等),或写字
imageellipse($pic, 100, 150, 200, 300, $red);

//填充背景色（X Y 坐标）
imagefill($pic, 200, 10, $blue);

//4. 输出/保存图形
imagepng($pic , &#39;./t1.png&#39;);

//5. 销毁画布(关闭画板)
imagedestroy($pic);

?>

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