PHP imagesetthickness有什么用

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Release: 2020-09-04 17:11:07
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PHP imagesetthickness用于设定画线的宽度,可以把画矩形,多边形,椭圆等等时所用的线宽设为指定像素大小;语法“imagesetthickness(image,thickness)”,thickness用于指定线宽(像素)。

PHP imagesetthickness有什么用

PHP imagesetthickness有什么用?

PHP imagesetthickness 用法

(PHP 4 >= 4.0.6, PHP 5, PHP 7)

imagesetthickness — 设定画线的宽度

说明

imagesetthickness ( resource $image , int $thickness ) : bool
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imagesetthickness() 把画矩形,多边形,椭圆等等时所用的线宽设为 thickness 个像素。成功时返回 TRUE, 或者在失败时返回 FALSE。

Note: 此函数需要 GD 2.0.1 或更高版本(推荐 2.0.28 及更高版本)。

参数

image

由图象创建函数(例如imagecreatetruecolor())返回的图象资源。

thickness

Thickness, in pixels.

返回值

成功时返回 TRUE, 或者在失败时返回 FALSE。

范例

Example #1 imagesetthickness() example

<?php
// Create a 200x100 image
$im = imagecreatetruecolor(200, 100);
$white = imagecolorallocate($im, 0xFF, 0xFF, 0xFF);
$black = imagecolorallocate($im, 0x00, 0x00, 0x00);
// Set the background to be white
imagefilledrectangle($im, 0, 0, 299, 99, $white);
// Set the line thickness to 5
imagesetthickness($im, 5);
// Draw the rectangle
imagerectangle($im, 14, 14, 185, 85, $black);
// Output image to the browser
header(&#39;Content-Type: image/png&#39;);
imagepng($im);
imagedestroy($im);
?>
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以上例程的输出类似于:

企业微信截图_15924508105039.png

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