Create simple images in PHP through the GD library (detailed explanation with pictures and text)

Create a simple picture through PHP’s GD library

1. Effect drawing

2. The code is as follows:

<?php
// PHP 使用 GD 拓展库制作图像
// 指定输出为 JPEG 图片
header(&#39;Content-type:image/jpeg&#39;);
// 1、创建图像
// imagecreatetruecolor($width, $height)
$img = imagecreatetruecolor(200, 200);
// 2、绘制图像
// 2.1 分配颜色
$color = imagecolorallocate($img, 114, 12, 114);
// 2.2 填充颜色
imagefill($img, 0, 0, $color);
// 3、输出图像，第二个参数表示文件名，如果有第二个参数则将直接保存图像而不显示   &#39;image/tupian.jpg&#39; => 相对位置  &#39;/home/image/tupian.jpg&#39; => 绝对位置，相对于系统
imagejpeg($img);
// 4、释放资源
imagedestroy($img);

3. The address of the file can be used as an image The address is written in HTML and displayed

Thank you all for reading, I hope you will benefit a lot.

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