无法安装 composer PHP 版本错误

Question

我将在我的 php 项目中为电子PHP表格安装一个Composer，但出现php version错误。

我尝试安装了很多次，但仍然是同样的错误。

这个 composer.json

{

    "name": "phpoffice/phpspreadsheet",

    "description": "PHPSpreadsheet - Read, Create and Write Spreadsheet documents in PHP - Spreadsheet engine",

    "keywords": ["PHP", "OpenXML", "Excel", "xlsx", "xls", "ods", "gnumeric", "spreadsheet"],

    "homepage": "https://github.com/PHPOffice/PhpSpreadsheet",

    "type": "library",

    "license": "LGPL-2.1-or-later",

    "authors": [

        {

            "name": "Maarten Balliauw",

            "homepage": "https://blog.maartenballiauw.be"

        },

        {

            "name": "Mark Baker",

            "homepage": "https://markbakeruk.net"

        },

        {

            "name": "Franck Lefevre",

            "homepage": "https://rootslabs.net"

        },

        {

            "name": "Erik Tilt"

        },

        {

            "name": "Adrien Crivelli"

        }

    ],

    "scripts": {

        "check": [

            "php-cs-fixer fix --ansi --dry-run --diff",

            "phpcs --report-width=200 samples/ src/ tests/ --ignore=samples/Header.php --standard=PSR2 -n",

            "phpunit --color=always"

        ],

        "fix": [

            "php-cs-fixer fix --ansi"

        ],

    },

这些是错误显示

- Installation request for mpdf/mpdf v7.1.6 -> satisfiable by mpdf/mpdf[v7.1.6].    

- mpdf/mpdf v7.1.6 requires php ^5.6 || ~7.0.0 || ~7.1.0 || ~7.2.0 -> your PHP version (7.3.6) does not satisfy that requirement.

- Installation request for mpdf/mpdf v7.1.6 -> satisfiable by mpdf/mpdf[v7.1.6].

- mpdf/mpdf v7.1.6 requires php ^5.6 || ~7.0.0 || ~7.1.0 || ~7.2.0 -> your PHP version (7.3.6) does not satisfy that requirement.

请帮忙。

Answer 1

使用以下命令安装依赖项：composer install --ignore-platform-reqs或使用以下内容更新 composer.json"config": {    "preferred-install": "dist",    "platform": {        "php": "7.2.0"    }}上述任何一种解决方案都会对您有所帮助。