像npm, composer等工具,在开始使用的使用,都需要初始化项目,生成一个项目的配置文件。这种功能的原理是怎么实现的呢?

比如:

D:\>npm init --yes
Wrote to D:\package.json:

{
 "name": "",
 "version": "1.0.0",
 "description": "",
 "main": "index.js",
 "directories": {
  "doc": "doc"
 },
 "scripts": {
  "test": "echo \"Error: no test specified\" && exit 1"
 },
 "keywords": [],
 "author": "",
 "license": "ISC"

其实很简单,在之前这篇文章《php解释命令行的参数》的基础上,加上下面的init分支,即可实现类似的功能

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#!/usr/bin/php
<?php
  function init(){
    return file_put_contents( getcwd() . '/go.json', '{}' ) . 'bytes has written.' . 'config file has created';
  }

  $res = '';
  if( $argc >= 2 ) {
    $argv[1] == '-v' && $res = 'go version is 1.0';
    $argv[1] == 'init' && $res = init();
  }
  echo $res . PHP_EOL;
ghostwu@ghostwu:~/mybin$ ls
go2
ghostwu@ghostwu:~/mybin$ go2 init
2bytes has written.config file has created
ghostwu@ghostwu:~/mybin$ ls
go2 go.json
ghostwu@ghostwu:~/mybin$ cat go.json
{}ghostwu@ghostwu:~/mybin$

以上所述是小编给大家介绍的php根据命令行参数生成配置文件详解整合,希望对大家有所帮助。