初識Composer

• 關於vendor name和project name的區別？
  • 包名(package name)包含了供應商名(vendor name)和項目名(project name)是爲了不命名衝突的
• require包的查找順序是什麼？
  • 會先在composer.json中找到key爲repositories的值
  • 若是找不到，則會到默認的Packagist中去找
• 分支名前面加dev是什麼意思？
  • 當你須要從VCS(Version Control System)中加載一個庫時，則須要在你的自定義分支名前面加一個"dev-"的前綴
• 版本前面的波浪號表示什麼意思？好比~2.1
  • it means >=2.1 <3.0
• 很重要，如何使用composer的幫助命令？
  • composer help + 命令 (composer help update)
• require和require-dev的區別是什麼？
  • The require-dev packages are packages that aren't necessary for your project to work and shouldn't be included in the production version of your project.Typically, these are packages such as phpunit/phpunit that you would use for unit testing your project.
• 如何去單獨更新一個pakage?
  • php composer.phar update vendor/package