composer学习(不断完善...)

Composer

{
	"name": "rebuy/rebuy",  # 开发者名称/包名
	"description": "Rebuy SaaS Project", #描述
	"type": "library", # 类型 application 和 library， application一般是root package，依赖多个libraries
	"license": "Proprietary", #这个表示私有项目，比如Apache-2.0, MIT, BSD-2-Clause
	"minimum-stability": "dev", #只能用在root package上， stable, RC, beta, alpha, dev 稳定性倒序排列
	"prefer-stable": true,
	"optimize-autoloader": true,
	"require": {
		#依赖的套件 "开发者名称/package-name":"version" 
		#版本规则 
		#1. 1.0.1(明确指定)  
		#2. 范围指定 >=1.0.1,<2.0 
		#3. 通配符指定 1.0.* 4.~1.2== >=1.2,<2.0; ~1.3.1 == >=1.3.1,<1.4.0
		"php": ">=7.0",
		"ext-curl": "*",
		"ext-json": "*",
		"ext-openssl": "*",
		"ext-PDO": "*",
		"ext-mbstring": "*",
		"wikimedia/composer-merge-plugin": "~1.3"
	},
	# 回调脚本，可以理解为钩子，发生动作后触发脚本
	"scripts": {
		"pre-update-cmd": [
			"bin/import-package",
			"bin/decide-env"
		],
		"post-install-cmd": [
			"bin/install/generate-cookie-encrypt-key"
		],
		"pre-autoload-dump": [
		],
		"post-autoload-dump": [
			"bin/convert-autoload",
			"vendor/bin/update-package-resource",
			"bin/cli clear:cache -calmr"
		],
		"pure-update": "@composer update --no-scripts"
	},
	"extra": {
		"merge-plugin": {
			"include": [
				"composer.local*.json"
			]
		}
	}
}

帮助

composer list
composer help <command>
composer show -i #查看已安装的composer包
composer show -p #查看已安装的平台安装包(包括php扩展)
composer config -l 查看配置

composer install --profile --prefer-dist --optimize-autoloader
--profile 显示时间和内存使用信息
--optimize-autoloader 优化自动加载获得20%~25%提升
--prefer-dist 大幅加快下载速度 ，忽略包下的.git目录从而回避对根目录git系统的影响

克隆一个包

composer create-project 包名 保存路径 版本号

更新依赖

composer update 包名 --prefer-dist 只更新指定包

声明依赖

composer require [--dev] 包名
require --dev 仅在开发环境安装的包，比如ide-helper

卸载依赖

composer remove 包名

全局配置

- 修改composer为阿里云 (加上-g是全局配置)
composer config repo.packagist composer https://mirrors.aliyun.com/composer/
composer config repo.packagist composer https://packagist.phpcomposer.com

- 取消配置
composer config -g --unset repos.packagist

更新composer自身

composer selfupdate

调试

composer -vvv require xxx

非官方repo引入方式

1. git版本库

{
	"type":"git",
	"url":"ssh://....git"
}

2. path本地路径

{
	"type":"path",
	"url":"包的相对路径"
}

3.composer源

{
	"type": "composer",
	"url": "https://packagist.phpcomposer.com"
}

自动加载

{
	"autoload": {
		"files": [
			"文件路径, 一般用于加载函数",
		],
		"psr-4": [
			"app\\":"src/App",
		],
		"classmap": ["lib/", "src/", "不符合psr规范，没有命名空间的类"]
	}
}