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Retrieve HTTP Headers

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  1. <?php
  2.  
  3. /**
  4. * Access the HTTP Request
  5. */
  6. class http_request extends bantr {
  7.  
  8. 	/** additional HTTP headers not prefixed with HTTP_ in $_SERVER superglobal */
  9. 	var $add_headers = array('CONTENT_TYPE', 'CONTENT_LENGTH');
  10.  
  11. 	/**
  12. 	* Construtor
  13. 	* Retrieve HTTP Body
  14. 	* @param Array Additional Headers to retrieve
  15. 	*/
  16. 	function http_request($add_headers = false) {
  17.  
  18. 		$this->retrieve_headers($add_headers);
  19. 		$this->body = @file_get_contents('php://input');
  20. 	}
  21.  
  22. 	/**
  23. 	* Retrieve the HTTP request headers from the $_SERVER superglobal
  24. 	* @param Array Additional Headers to retrieve
  25. 	*/
  26. 	function retrieve_headers($add_headers = false) {
  27.  
  28. 		if ($add_headers) {
  29. 			$this->add_headers = array_merge($this->add_headers, $add_headers);
  30. 		}
  31.  
  32. 		if (isset($_SERVER['HTTP_METHOD'])) {
  33. 			$this->method = $_SERVER['HTTP_METHOD'];
  34. 			unset($_SERVER['HTTP_METHOD']);
  35. 		} else {
  36. 			$this->method = isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : false;
  37. 		}
  38. 		$this->protocol = isset($_SERVER['SERVER_PROTOCOL']) ? $_SERVER['SERVER_PROTOCOL'] : false;
  39. 		$this->request_method = isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : false;
  40.  
  41. 		$this->headers = array();
  42. 		foreach($_SERVER as $i=>$val) {
  43. 			if (strpos($i, 'HTTP_') === 0 || in_array($i, $this->add_headers)) {
  44. 				$name = str_replace(array('HTTP_', '_'), array('', '-'), $i);
  45. 				$this->headers[$name] = $val;
  46. 			}
  47. 		}
  48. 	}
  49.  
  50. 	/** 
  51. 	* Retrieve HTTP Method
  52. 	*/
  53. 	function method() {
  54. 		return $this->method;
  55. 	}
  56.  
  57. 	/** 
  58. 	* Retrieve HTTP Body
  59. 	*/
  60. 	function body() {
  61. 		return $this->body;
  62. 	}
  63.  
  64. 	/** 
  65. 	* Retrieve an HTTP Header
  66. 	* @param string Case-Insensitive HTTP Header Name (eg: "User-Agent")
  67. 	*/
  68. 	function header($name) {
  69. 		$name = strtoupper($name);
  70. 		return isset($this->headers[$name]) ? $this->headers[$name] : false;
  71. 	}
  72.  
  73. 	/**
  74. 	* Retrieve all HTTP Headers 
  75. 	* @return array HTTP Headers
  76. 	*/
  77. 	function headers() {
  78. 		return $this->headers;
  79. 	}
  80.  
  81. 	/**
  82. 	* Return Raw HTTP Request (note: This is incomplete)
  83. 	* @param bool ReBuild the Raw HTTP Request
  84. 	*/
  85. 	function raw($refresh = false) {
  86.  
  87. 		if (isset($this->raw) && !$refresh) {
  88. 			return $this->raw; // return cached
  89. 		}
  90.  
  91. 		$headers = $this->headers();
  92. 		$this->raw = "{$this->method}
  93. ";
  94.  
  95. 		foreach($headers as $i=>$header) {
  96. 				$this->raw .= "$i: $header
  97. ";
  98. 		}
  99.  
  100. 		$this->raw .= "
  101. {$http_request->body}";
  102.  
  103. 		return $this->raw;
  104. 	}
  105.  
  106. }
  107.  
  108. ?>

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