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用代码演绎mvc pathinfo路由的解析原理
木子木杉
Original
379 people have browsed it

用代码演绎mvc pathinfo路由

解析pathinfo,从url解析控制器和方法,参数
从谷歌搜索输入url
http://chloe.io/0222/demo.php/user/index/id/2/name/jim

  1. <?php
  2. //api mvc 这种架构模式 url地址都会映射到控制器下面的一个具体操作方法上
  3. namespace mvc;
  4. class User
  5. {
  6. function index($id, $name)
  7. {
  8. return "您好$name,您的Id是$id";
  9. }
  10. }
  11. // var_dump($_SERVER);
  12. var_dump($_SERVER['PATH_INFO']);
  13. var_dump(explode("/", $_SERVER['PATH_INFO'])); // /user/index/id/2/name/jim
  14. //先用explode分割成数组
  15. //用array_filte()去除空数组,用array_values()重新排数组键
  16. $pathinfo = array_values(array_filter(explode("/", $_SERVER['PATH_INFO'])));
  17. // var_dump($pathinfo);
  18. //用array_shift()取出第一个字符串与命名空间拼接,为控制器
  19. $controller = __NAMESPACE__ . '\\' . array_shift($pathinfo);
  20. var_dump($controller);
  21. // var_dump($pathinfo);
  22. //用array_shift()取出字符串为方法
  23. $method = array_shift($pathinfo);
  24. var_dump($method);
  25. // $params = ['id' => 1, 'name' => 'peter'];
  26. var_dump($pathinfo);
  27. //前提是参数是通过pathinfo方式提交过来
  28. for ($i = 0; $i < count($pathinfo); $i += 2) {
  29. $params[$pathinfo[$i]] = $pathinfo[$i + 1];
  30. }
  31. //取出参数数组
  32. var_dump($params);
  33. //用call_user_func_array()返回回调函数的结果
  34. echo call_user_func_array([(new $controller), $method], $params);
  35. //改变url的参数值,回调函数的值随之改变
Correcting teacher:PHPzPHPz

Correction status:qualified

Teacher's comments:
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