如何在 PHP 中为图像添加文本水印？

这篇简单的文章演示了 php 添加水印文本到图像。您将学习如何在 php 中为图像添加水印文本。 

有时我们想在您网站的每张图片上添加一个网站域名作为水印。然后我会给你一个非常简单的例子，说明如何在 PHP 中为图像添加文本水印。所以让我们简单地按照下面的代码完成它。

例子：

在这里，您需要将一张图片称为“watermark-php-text.png”。然后你必须从谷歌字体下载字体并放入文件夹。您可以从这里下载：下载字体。

让我们复制下面的代码并创建 index.php 文件。

索引.php

<?php
  
$sourceImage = "watermark-php-text.png";
  
$imagetobewatermark = imagecreatefrompng($sourceImage);
$watermarktext=" ";
$font= "fonts/Roboto/Roboto-Bold.ttf";
$fontsize="22";
$white = imagecolorallocate($imagetobewatermark, 51, 102, 0);
  
$image = imagecreatefrompng($sourceImage);
$imageSize = getimagesize($sourceImage);
  
$wmX = $imageSize[0] - 380;
$wmY = $imageSize[1] - 20;
  
imagettftext($imagetobewatermark, $fontsize, 0, $wmX, $wmY, $white, $font, $watermarktext);
  
header("Content-type:image/png");
/*
  For Save Image
  imagepng($imagetobewatermark, $sourceImage);
*/
  
imagepng($imagetobewatermark);
imagedestroy($imagetobewatermark);

我希望它可以帮助你...

来源：https ://www.itsolutionstuff.com/post/how-to-add-text-watermark-to-image-in-phpexample.html

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