PHP imagesetthickness有什么用
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 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
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, $black); // Output image to the browser header('Content-Type: image/png'); imagepng($im); imagedestroy($im); ?>
以上例程的输出类似于:
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