Community Learn Tools Library Leisure

English

Home > Backend Development > PHP Tutorial > How to draw a circle in php_php gd library draws a circle

How to draw a circle in php_php gd library draws a circle

WBOY

Release： 2016-07-25 08:52:07

Original

2287 people have browsed it

//1. Create canvas
$im = imagecreatetruecolor(300,200);//Create a new true color image, the default background is black, and return the image identifier. There is also a function imagecreate that has been deprecated.
//2. Draw the required image
$red = imagecolorallocate($im,255,0,0);//Create a color for use
imageellipse($im, 30,30,40,40,$red);//Draw a circle. Parameter description: 30, 30 are the center coordinates of the circle; 40, 40 are the width and height, if they are different, it is an ellipse; $red is the color of the circle (frame color)
// 3. Output the image
header("content-type: image/png");
imagepng($im);//Output to the page. If there is a second parameter [,$filename], it means saving the image
//4. Destroy the image and release the memory
imagedestroy($im);
?>

Copy code

Related labels：

php怎么绘制圆形_php gd库绘制圆形图

source：php.cn

Previous article：PHP magic function __call() usage example Next article：Share a PHP file upload class

Statement of this Website

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn