无法将 Laravel 5.4 更新到 5.5 composer

Question

When I tried to update Laravel 5.5 from 5.4, it is show errors.

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "keywords": ["framework", "laravel"],
    "license": "MIT",
    "type": "project",
    "require": {
        "php": ">=7.0",
        "intervention/image": "^2.4",
        "laravel/framework": "5.5.*",
        "laravel/tinker": "~1.0"
    },
    "require-dev": {
        "fzaninotto/faker": "~1.4",
        "mockery/mockery": "0.9.*",
        "phpunit/phpunit": "~6.0"
    },
    "autoload": {
        "classmap": [
            "database"
        ],
        "psr-4": {
            "App\\": "app/"
        }
    },
    "autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/"
        }
    },
    "scripts": {
        "post-root-package-install": [
            "php -r \"file_exists('.env') || copy('.env.example', '.env');\""
        ],
        "post-create-project-cmd": [
            "php artisan key:generate"
        ],
        "post-install-cmd": [
            "Illuminate\\Foundation\\ComposerScripts::postInstall",
            "php artisan optimize"
        ],
        "post-update-cmd": [
            "Illuminate\\Foundation\\ComposerScripts::postUpdate",
            "php artisan optimize"
        ]
    },
    "config": {
        "preferred-install": "dist",
        "sort-packages": true,
        "optimize-autoloader": true
    }
}

This is my composer.json file. When I use command composer update , this is show.

Problem 1
        - This package requires php >=7.0 but your PHP version (5.6.25) does not satisfy that requirement.
      Problem 2
        - Installation request for laravel/framework 5.5.* -> satisfiable by laravel/framework[v5.5.0].
        - laravel/framework v5.5.0 requires php >=7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
      Problem 3
        - phpunit/phpunit 6.3.0 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.2.4 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.2.3 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.2.2 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.2.1 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.2.0 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.1.4 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.1.3 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.1.2 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.1.1 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.1.0 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.9 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.8 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.7 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.6 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.5 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.4 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.3 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.2 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.13 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.12 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.11 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.10 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.1 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - phpunit/phpunit 6.0.0 requires php ^7.0 -> your PHP version (5.6.25) does not satisfy that requirement.
        - Installation request for phpunit/phpunit ~6.0 -> satisfiable by phpunit/phpunit[6.0.0, 6.0.1, 6.0.10, 6.0.11, 6.0.12, 6.0.13, 6.0.
    2, 6.0.3, 6.0.4, 6.0.5, 6.0.6, 6.0.7, 6.0.8, 6.0.9, 6.1.0, 6.1.1, 6.1.2, 6.1.3, 6.1.4, 6.2.0, 6.2.1, 6.2.2, 6.2.3, 6.2.4, 6.3.0].

My PHP version is 7.0.10 and I use wamp.

Answer 1

Your PHP version is 5.6

This package requires php >=7.0 but your PHP version (5.6.25) does not satisfy that requirement.

So change your PHP version to PHP 7.0 and run:

composer install

Answer 2

i had similar issue in the past.. this happens with wamp.. check your php version using command prompt.. sometimes wamp shows v7 but the project keeps using older version in the background. or create a route on laravel to show php version.. it will confirm what the issue is.

Answer 3

您需要删除composer.lock文件并再次运行composer install

Answer 4

尝试 composer install --ignore-platform-reqs

Answer 5

For updating Laravel 6.x (Which means any subversions to V6)
Just run this command

cd [laravel installation directory]
composer update

You must have composer installed on your VM or PC.

For Linux users only:

Composer directory must be owned by current user

//Check ownership
ls -la ~/ | grep ".composer"

//If you don't own the directory
chown -R [user]/[user] ~/.composer

Message me on any social media @smitpatelx Or leave a comment if you need any help or if your usecase differ from the above.