Composer报错处理：依赖冲突与版本回滚

Failed to decode response: zlib_decode(): data error
Retrying with degraded mode, check https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info

composer镜像不支持https引起

打开命令行窗口（windows用户）或控制台（Linux、Mac 用户），进入你的项目的根目录（也就是 composer.json 文件所在目录），执行如下命令：

composer config repo.packagist composer https://packagist.phpcomposer.com
上述命令将会在当前项目中的 composer.json 文件的末尾自动添加镜像的配置信息（你也可以自己手工添加）：

“repositories”: {
“packagist”: {
“type”: “composer”,
“url”: “https://packagist.phpcomposer.com”
}
}
以 laravel 项目的 composer.json 配置文件为例，执行上述命令后如下所示（注意最后几行）：

{
“name”: “laravel/laravel”,
“description”: “The Laravel Framework.”,
“keywords”: [“framework”, “laravel”],
“license”: “MIT”,
“type”: “project”,
“require”: {
“php”: “>=5.5.9”,
“laravel/framework”: “5.2.*”
},
“require-dev”: {
“fzaninotto/faker”: “~1.4”,
“mockery/mockery”: “0.9.*”,
“phpunit/phpunit”: “~4.0”,
“symfony/css-selector”: “2.8.|3.0.“,
“symfony/dom-crawler”: “2.8.|3.0.”
},
“autoload”: {
“classmap”: [
“database”
],
“psr-4”: {
“App”: “app/”
}
},
“autoload-dev”: {
“classmap”: [
“tests/TestCase.php”
]
},
“scripts”: {
“post-root-package-install”: [
“php -r ”copy(‘.env.example’, ‘.env’);””
],
“post-create-project-cmd”: [
“php artisan key:generate”
],
“post-install-cmd”: [
“php artisan clear-compiled”,
“php artisan optimize”
],
“pre-update-cmd”: [
“php artisan clear-compiled”
],
“post-update-cmd”: [
“php artisan optimize”
]
},
“config”: {
“preferred-install”: “dist”
},
“repositories”: {
“packagist”: {
“type”: “composer”,
“url”: “https://packagist.phpcomposer.com”
}
}
}
OK，一切搞定！试一下 composer install 来体验飞一般的速度吧！

').addClass('pre-numbering').hide(); $(this).addClass('has-numbering').parent().append($numbering); for (i = 1; i ').text(i)); }; $numbering.fadeIn(1700); }); });

以上就介绍了composer install or update 报错问题解决，包括了composer方面的内容，希望对PHP教程有兴趣的朋友有所帮助。