php DoomHamster Media Group的URI解析器（如果不使用命名空间，则从脚本顶部删除命名空间）

Posted 2021-05-04

<?php namespace DHMedia\Input;
/**
 * DHMedia URI Parser
 *
 * @author Mark LaDoux <[e-mail]>
 * @copyright Copyright © 2018, DoomHamster Media
 * @license MIT <https://opensource.org/licenses/MIT>
 */

 class URI
 {

   /**
    * URI Data
    *
    * @access protected
    * @var    array
    */
   protected $data = [];

   /**
    * Class Constructior
    *
    * Parses the current URI and stores it into an array for use.
    *
    * @access public
    * @return void
    */
   public function __construct()
   {

     // Smaller variable that's easier to work with
     $sd = $_SERVER;

     // Data Stuff
     $data['hostname'] = $sd['SERVER_NAME'];
     $data['secure']   = (isset($sd['HTTPS']) && $sd['HTTPS'] == 'on') ? true : false;
     $data['port']     = (int) $sd['SERVER_PORT'];
     $data['document'] = $sd['DOCUMENT_URI'];

     // Get raw uri
     $raw_uri  = ltrim($sd['REQUEST_URI'], $data['document']);

     // Ensure that $data['raw_uri'] is set to something.
     if (empty($raw_uri)) {
       $raw_uri = '/';
     }
     $data['raw_uri'] = $raw_uri;

     // Check for uri query string
     $pos = strpos($data['raw_uri'], '?');

     if ($pos === false) {
       // We don't need to do anything, set the uri and query arrays.
       $data['uri']   = $data['raw_uri'];
       $data['query'] = [];
     } else {
       // we need to split the query's from the uri
       $limit = 2;
       $parts = explode('?', $data['raw_uri'], $limit);
       $data['uri'] = $parts[0];

       $queries = explode('&', $parts[1]);

       foreach ($queries as $query) {
         $limit = 2;
         $keyval = explode('=', $query, $limit);
         $data['query'][$keyval[0]] = $keyval[1];
       }
     }

     // Get URI segments
     $data['segment'] = array_merge([], array_filter(explode('/', $data['uri'])));

     $this->data       = $data;

   }


   /**
    * segment
    *
    * Returns the requested uri segment
    *
    * @access public
    * @param  int    $n Segment to retrieve
    * @return string    Value of segment
    */
   public function segment(int $n)
   {
     // If the script requests segment 0, we will return the document name
     // We stripped it out before forming the segments for consistency, so that
     // it will even be available here if url rewriting is used to hide it.
     if ($n === 0) {
       return $this->data['document'];
     }
     $key = $n - 1;

     // if the segment is set, return it, else return false
     return ($this->data['segment'][$key]) ? $this->data['segment'][$key] : false;

   }

   /**
    * Retrieve value of query
    *
    * @access public
    * @param  string $key Key name
    * @return mixed       Key value
    */
   public function query(string $key)
   {
     return (isset($this->data['query'][$key])) ? $this->data['query'][$key] : false;
   }

   /**
    * Return whether or not the request is using a secure protocol
    *
    * @access public
    * @return bool  true if secure, false if not.
    */
   public function secure()
   {
     return $this->data['secure'];
   }

   /**
    * Return the requested hostname from the URL
    *
    * @access public
    * @return string
    */
   public function hostname()
   {
     return $this->data['hostname'];
   }

   /**
    * Return the port number site was accessed over
    *
    * @access public
    * @return int
    */
   public function port()
   {
     return $this->data['port'];
   }

 }