Table of Contents
回复讨论(解决方案)
Home Backend Development PHP Tutorial GD 函数合成图片问题(一张jpg,一张png)

GD 函数合成图片问题(一张jpg,一张png)

Jun 23, 2016 pm 02:21 PM

RT:
请问用php怎么能合成两张图片呢?
一张是png 透明的底图,另一张是jpg 图片

现在想让jpg的图片合成到png的底图上面,成为一张新的图片,如何实现呢?

另外问下,是不是合成的图片要尺寸一样大呢?还是底图可以大点的?

本人在网上也找了一些方法,但好像都不行

  $path_1 = "topic_assets/522592b5d61cb_ip4.jpg";  $path_2 = "topic_assets/topic_border_android.png";	//echo $path_1;	$image=imagecreatefromjpeg($path_1);  	$wm=imagecreatefrompng($path_2);   	$im=imagecreatetruecolor(imagesx($image),imagesy($image));   	imagecopy($im,$image,0,0,0,0,imagesx($image),imagesy($image));   	imagecopy($im,$wm,0,0,0,0,imagesx($wm),imagesy($wm));
Copy after login


做过类似的,给个解决方案吧...


回复讨论(解决方案)

GD 提供了很多函数,你总得都去试试吧!比如这个怎么样?

$t1 = 'http://avatar.csdn.net/1/C/9/1_mahuatengbc.jpg';$t2 = 'http://avatar.csdn.net/2/5/B/1_yykr1987.jpg';$im1 = imagecreatefromjpeg($t1);$im2 = imagecreatefromjpeg($t2);imagecopymerge($im1, $im2, 35, 5, 0, 0, imagesx($im2), imagesy($im2), 63);imagejpeg($im1);
Copy after login
Copy after login

GD 提供了很多函数,你总得都去试试吧!比如这个怎么样?

$t1 = 'http://avatar.csdn.net/1/C/9/1_mahuatengbc.jpg';$t2 = 'http://avatar.csdn.net/2/5/B/1_yykr1987.jpg';$im1 = imagecreatefromjpeg($t1);$im2 = imagecreatefromjpeg($t2);imagecopymerge($im1, $im2, 35, 5, 0, 0, imagesx($im2), imagesy($im2), 63);imagejpeg($im1);
Copy after login
Copy after login

谢谢版主了,我先试试看!

艾玛,吓死我了!
我的要求是一张jpg ,一张png ,png做底图, 合成的也是png格式的!

按照版主的做法,出现了一大堆奇怪的乱码 ,如下图



我的代码是这样的:

$path_1 = "522592b5d61cb_ip4.jpg";	$path_2 = "topic_border_android.png";	$im1 = imagecreatefromjpeg($path_1);	$im2 = imagecreatefrompng($path_2);	imagecopymerge($im1, $im2, 35, 5, 0, 0, imagesx($im2), imagesy($im2), 63);	imagejpeg($im2);	imagedestroy($im2);
Copy after login
Copy after login

不知道哪里的问题....

艾玛,吓死我了!
我的要求是一张jpg ,一张png ,png做底图, 合成的也是png格式的!

按照版主的做法,出现了一大堆奇怪的乱码 ,如下图



我的代码是这样的:

$path_1 = "522592b5d61cb_ip4.jpg";	$path_2 = "topic_border_android.png";	$im1 = imagecreatefromjpeg($path_1);	$im2 = imagecreatefrompng($path_2);	imagecopymerge($im1, $im2, 35, 5, 0, 0, imagesx($im2), imagesy($im2), 63);	imagejpeg($im2);	imagedestroy($im2);
Copy after login
Copy after login

不知道哪里的问题....

imagejpeg生成的是jpg格式的图片。imgpng生成的才是png格式的图片。

你的之所以出现”怪“代码,是因为没有加上header,所以被当做二进制数据直接输出了。
前面加上header("content-type:image/png");
然后用imgpng生成图片。

也不一定
也可能是 BOM 头的关系

谢谢楼上的,但是图片没保存下来?
我只是在浏览器看到这个图片了,但是我想在文件夹中找到这个图片,就没有,是合成的图片,不能保存吗?

而且这图片的后面有黑色的阴影,这个能去掉么!

imagejpeg($im2, '图片文件名');

    header("content-type:image/png");    //合成两张图片    $targetFileDark="522ec9db6b46b"; 	$dest = imagecreatefrompng('topic_border_android.png');	$src = imagecreatefromjpeg($targetFileDark."_ip4.jpg");		$newim = imagecreatetruecolor(103,92);	$back = imagecolorallocatealpha($newim, 0, 0, 0, 127);	imagefilledrectangle($src, 0, 0, 98, 58, $back);			imagealphablending($dest, false);	imagesavealpha($dest, true);	imagecopymerge($dest, $src, 36,11,0,0,imagesx($src), imagesy($src),100);	imagepng($dest,$targetFileDark."_android.png");	imagedestroy($dest);	imagedestroy($src);
Copy after login

昨天研究了一下午,终于搞定了

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

11 Best PHP URL Shortener Scripts (Free and Premium) 11 Best PHP URL Shortener Scripts (Free and Premium) Mar 03, 2025 am 10:49 AM

Long URLs, often cluttered with keywords and tracking parameters, can deter visitors. A URL shortening script offers a solution, creating concise links ideal for social media and other platforms. These scripts are valuable for individual websites a

Working with Flash Session Data in Laravel Working with Flash Session Data in Laravel Mar 12, 2025 pm 05:08 PM

Laravel simplifies handling temporary session data using its intuitive flash methods. This is perfect for displaying brief messages, alerts, or notifications within your application. Data persists only for the subsequent request by default: $request-

Build a React App With a Laravel Back End: Part 2, React Build a React App With a Laravel Back End: Part 2, React Mar 04, 2025 am 09:33 AM

This is the second and final part of the series on building a React application with a Laravel back-end. In the first part of the series, we created a RESTful API using Laravel for a basic product-listing application. In this tutorial, we will be dev

Simplified HTTP Response Mocking in Laravel Tests Simplified HTTP Response Mocking in Laravel Tests Mar 12, 2025 pm 05:09 PM

Laravel provides concise HTTP response simulation syntax, simplifying HTTP interaction testing. This approach significantly reduces code redundancy while making your test simulation more intuitive. The basic implementation provides a variety of response type shortcuts: use Illuminate\Support\Facades\Http; Http::fake([ 'google.com' => 'Hello World', 'github.com' => ['foo' => 'bar'], 'forge.laravel.com' =>

cURL in PHP: How to Use the PHP cURL Extension in REST APIs cURL in PHP: How to Use the PHP cURL Extension in REST APIs Mar 14, 2025 am 11:42 AM

The PHP Client URL (cURL) extension is a powerful tool for developers, enabling seamless interaction with remote servers and REST APIs. By leveraging libcurl, a well-respected multi-protocol file transfer library, PHP cURL facilitates efficient execution of various network protocols, including HTTP, HTTPS, and FTP. This extension offers granular control over HTTP requests, supports multiple concurrent operations, and provides built-in security features.

12 Best PHP Chat Scripts on CodeCanyon 12 Best PHP Chat Scripts on CodeCanyon Mar 13, 2025 pm 12:08 PM

Do you want to provide real-time, instant solutions to your customers' most pressing problems? Live chat lets you have real-time conversations with customers and resolve their problems instantly. It allows you to provide faster service to your custom

Announcement of 2025 PHP Situation Survey Announcement of 2025 PHP Situation Survey Mar 03, 2025 pm 04:20 PM

The 2025 PHP Landscape Survey investigates current PHP development trends. It explores framework usage, deployment methods, and challenges, aiming to provide insights for developers and businesses. The survey anticipates growth in modern PHP versio

Notifications in Laravel Notifications in Laravel Mar 04, 2025 am 09:22 AM

In this article, we're going to explore the notification system in the Laravel web framework. The notification system in Laravel allows you to send notifications to users over different channels. Today, we'll discuss how you can send notifications ov

See all articles