Question

我想使用Laravel 5.0创建一个项目，所以我输入了Problem 1 - laravel/framework v5.0.9 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.8 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.7 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.6 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.5 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.4 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.35 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.34 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.33 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.32 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.31 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.3 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.29 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.28 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.27 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.26 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.25 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.24 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.23 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.22 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.21 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.20 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.2 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.19 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.18 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.17 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.16 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.15 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.14 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.13 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.12 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.11 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.10 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.1 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework v5.0.0 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - laravel/framework 5.0.30 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system. - Installation request for laravel/framework 5.0.* -> satisfiable by laravel/framework[5.0.30, v5.0.0, v5.0.1, v5.0.，但是它返回了**您的要求无法解决为一组可安装的软件包。

您的要求无法解决为一组可安装的软件包。

{{1}}

我不为什么会收到此错误，因为我的PHP版本是 7.4.8 ，而我刚刚下载并安装了Composer。

因此，如果您知道如何解决此问题，请告诉我，我将非常感谢...

thnak

Answer 1

要使用ext-mcrypt，您需要较旧的PHP版本（PHP> = 5.4，PHP <7）

使用旧PHP版本的一种方法是安装旧Xampp版本。我告诉你如何拥有两个自定义Xampps ...

首先确保当前的XAMPP和相关服务未运行。停止所有服务，例如Apache和MySQL，然后退出XAMPP控制面板。
导航到当前XAMPP安装所在的位置（通常为C :），然后将现有的“ xampp”文件夹重命名为其他名称。叫什么都无所谓，但我建议您将其命名为有意义的名称。例如，您可以在其后附加版本号，例如“ xampp-1.7.2”。
从here下载所需版本的XAMPP并正常安装，最好与步骤2中现有文件夹所在的位置相同。现在，您应该已安装两个版本的XAMPP。 / p>

然后取消安装作曲家，然后重新安装它，但是这次要包括php.exe时指定xampp的旧版本

现在您可以创建Laravel 5.0项目：

composer create-project laravel/laravel your-project-name 5.0.*

Answer 2

Windows：

如果您已经存在mcrypt扩展dll文件，这将起作用

编辑php.ini
在“动态扩展”部分添加extension=mcrypt.so
重启服务器

如果不存在mcrypt。

根据您的php版本从下面的链接安装mcrypt dll文件 https://pecl.php.net/package/mcrypt/1.0.3/windows

将您的dll文件放置在位置F:\xampp\php\ext\

Ubuntu：

尝试通过以下命令安装mcrypt扩展，您需要根据您的php版本安装mcrypt

//check php version
php -v

//for php version 5
sudo apt-get install mcrypt
sudo apt-get install php5-mcrypt

//for php version 7.2
sudo apt-get -y install gcc make autoconf libc-dev pkg-config
sudo pecl install mcrypt-1.0.1
sudo apt-get -y install php7.2-dev
sudo apt-get -y install libmcrypt-dev

在正确安装mcrypt之后，继续进行laravel安装

composer create-project laravel/laravel {directory} "5.0.*" --prefer-dist

有关Laravel 5.0 installation的laravel文档，请参见

Answer 3

对于Windows，请转到您的php安装的文件夹并编辑php.ini

添加或取消注释此行

extension=mcrypt.so

和

从https://windows.php.net/downloads/pecl/releases/mcrypt/1.0.3/php_mcrypt-1.0.3-7.4-nts-vc15-x64.zip下载php_mcrypt.so.dll

并放入xampp\php\ext\

尝试使用Laravel 5.0创建项目时出现Composer错误

3 个答案: