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php - 尝试使用 Laravel 5.0 创建项目时出现 Composer 错误

问题描述

我想用 Laravel 5.0 创建一个项目，所以我输入composer create-project laravel/laravel laravel 5.0了但它返回这个 **您的要求无法解析为一组可安装的包。

您的要求无法解决为一组可安装的软件包。

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.

我不知道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。

所以如果你知道我该如何解决这个问题，请告诉我，我真的很感激......

特纳克

标签： phplaravellaravel-5composer-php

解决方案

对于 Windows 转到您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

php_mcrypt.so.dll 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

并放xampp\php\ext\

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