一个更改 hosts 的 PHP 脚本

2. define('HOST_FILE', 'C:\Windows\System32\drivers\etc\hosts');
4. $hm = new HostManage(HOST_FILE);
6. $env = $argv[1];
7. if (empty($env)) {
8. $hm->delAllGroup();
9. } else {
10. $hm->addGroup($env);
11. }
13. class HostManage {
15. // hosts 文件路径
16. protected $file;
17. // hosts 记录数组
18. protected $hosts = array();
19. // 配置文件路径，默认为 __FILE__ . '.ini';
20. protected $configFile;
21. // 从 ini 配置文件读取出来的配置数组
22. protected $config = array();
23. // 配置文件里面需要配置的域名
24. protected $domain = array();
25. // 配置文件获取的 ip 数据
26. protected $ip = array();
28. public function __construct($file, $config_file = null) {
29. $this->file = $file;
30. if ($config_file) {
31. $this->configFile = $config_file;
32. } else {
33. $this->configFile = __FILE__ . '.ini';
34. }
35. $this->initHosts()
36. ->initCfg();
37. }
39. public function __destruct() {
40. $this->write();
41. }
43. public function initHosts() {
44. $lines = file($this->file);
45. foreach ($lines as $line) {
46. $line = trim($line);
47. if (empty($line) || $line[0] == '#') {
48. continue;
49. }
50. $item = preg_split('/\s+/', $line);
51. $this->hosts[$item[1]] = $item[0];
52. }
53. return $this;
54. }
56. public function initCfg() {
57. if (! file_exists($this->configFile)) {
58. $this->config = array();
59. } else {
60. $this->config = (parse_ini_file($this->configFile, true));
61. }
62. $this->domain = array_keys($this->config['domain']);
63. $this->ip = $this->config['ip'];
64. return $this;
65. }
67. /**
68. * 删除配置文件里域的 hosts
69. */
70. public function delAllGroup() {
71. foreach ($this->domain as $domain) {
72. $this->delRecord($domain);
73. }
74. }
76. /**
77. * 将域配置为指定 ip
78. * @param type $env
79. * @return \HostManage
80. */
81. public function addGroup($env) {
82. if (! isset($this->ip[$env])) {
83. return $this;
84. }
85. foreach ($this->domain as $domain) {
86. $this->addRecord($domain, $this->ip[$env]);
87. }
88. return $this;
89. }
91. /**
92. * 添加一条 host 记录
93. * @param type $ip
94. * @param type $domain
95. */
96. function addRecord($domain, $ip) {
97. $this->hosts[$domain] = $ip;
98. return $this;
99. }
101. /**
102. * 删除一条 host 记录
103. * @param type $domain
104. */
105. function delRecord($domain) {
106. unset($this->hosts[$domain]);
107. return $this;
108. }
110. /**
111. * 写入 host 文件
112. */
113. public function write() {
114. $str = '';
115. foreach ($this->hosts as $domain => $ip) {
116. $str .= $ip . "\t" . $domain . PHP_EOL;
117. }
118. file_put_contents($this->file, $str);
119. return $this;
120. }
122. }

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使用方法：

1. php hosts.php local # 域名将指向本机 127.0.0.1
2. php hosts.php dev # 域名将指向开发机 192.168.1.100
3. php hosts.php # 删除域名的 hosts 配置

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hosts, PHP