【发布时间】：2021-10-27 00:09:28
【问题描述】：
我已经安装了 composer，现在我正在尝试在我的项目文件夹中安装 mpdf。
我执行了以下命令composer require mpdf/mpdf。在此之后，我收到以下错误：
Using version ^8.0 for mpdf/mpdf
./composer.json has been created
Running composer update mpdf/mpdf
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.
Problem 1
- mpdf/mpdf[v8.0.0, ..., v8.0.3] require php ^5.6 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 -> your php version (8.0.7) does not satisfy that requirement.
- mpdf/mpdf[v8.0.4, ..., v8.0.7] require php ^5.6 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 || ~7.4.0 -> your php version (8.0.7) does not satisfy that requirement.
- mpdf/mpdf[v8.0.8, ..., v8.0.9] require php ^5.6 || ^7.0 -> your php version (8.0.7) does not satisfy that requirement.
- mpdf/mpdf[v8.0.10, ..., v8.0.12] require ext-gd * -> it is missing from your system. Install or enable PHP's gd extension.
- Root composer.json requires mpdf/mpdf ^8.0 -> satisfiable by mpdf/mpdf[v8.0.0, ..., v8.0.12].
To enable extensions, verify that they are enabled in your .ini files:
- C:\xampp\php\php.ini
You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.
Installation failed, deleting ./composer.json.
有什么解决办法吗？
【问题讨论】：
-
您好，根据documentation，自 mPDF v8.0.10 起支持 PHP 8.0。确保安装适当的版本。
-
它就在错误消息中。需要 ext-gd * -> 您的系统中缺少它。安装或启用 PHP 的 gd 扩展。要启用扩展，请确认它们已在您的 .ini 文件中启用