如何使用 PHP GD 库向图像添加文本 [英] How to add text to an image with PHP GD library
本文介绍了如何使用 PHP GD 库向图像添加文本的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在 image_creator 中有图像创建代码.
I have image creation code in image_creator.
<?php
header("Content-Type: image/jpeg");
$im = ImageCreateFromGif("photo.gif");
$black = ImageColorAllocate($im, 255, 255, 255);
$start_x = 10;
$start_y = 20;
Imagettftext($im, 12, 0, $start_x, $start_y, $black, 'verdana.ttf', "text to write");
Imagejpeg($im, '', 100);
ImageDestroy($im);
?>
图像输出文件是image.php，代码如下
The file for image output is image.php and has below code
<html>
<head>
</head>
<body>
<img src="http://localhost/image_creator.php"/>
</body>
</html>
当我运行 image.php 时，我只得到一个空白页面.为什么会这样?
When I run image.php, I just get a blank page. Why is it so?
推荐答案
使用这个向图像添加文本(复制自 儿童 PHP)
Use this to add text to image (copied from PHP for Kids)
<?php
//Set the Content Type
header('Content-type: image/jpeg');
// Create Image From Existing File
$jpg_image = imagecreatefromjpeg('sunset.jpg');
// Allocate A Color For The Text
$white = imagecolorallocate($jpg_image, 255, 255, 255);
// Set Path to Font File
$font_path = 'font.TTF';
// Set Text to Be Printed On Image
$text = "This is a sunset!";
// Print Text On Image
imagettftext($jpg_image, 25, 0, 75, 300, $white, $font_path, $text);
// Send Image to Browser
imagejpeg($jpg_image);
// Clear Memory
imagedestroy($jpg_image);
?>
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