PHP使用GD生成水印图片

框架： PHP Laravel 5.5

code

 public function waterfall(Request $request)
    {
        $im = imagecreatetruecolor(500, 500);
        $white = imagecolorallocate($im, 255, 255, 255);
        imagefill($im, 0, 0, $white); // 填滿白色 (背景)
        // 你的字体文件
        $font = base_path('resources') . '/fonts/yourfonts.ttf';
        $black = imagecolorallocate($im, 51, 51, 51);
        $user = '焦糖大瓜子';
        $name = '信息敏感，严禁外传';
        imagefttext($im, 24, 30, 20, 300, $black, $font, $name);
        // $image, $size, $angle, $x, $y, $color, $fontfile, $text, $extrainfo = null
        imagefttext($im, 24, 30, 120, 350, $black, $font, $user);
        imagecolortransparent($im, $white);
        // 设置header
        header("Content-type: image/png");
        imagepng($im);
        imagedestroy($im);
    }

result

image.png

Note:
自动换行可以参考：
https://blog.gxxsite.com/php-image-draw-text-line-auto-cut/