<?php

class Header {

	var $header = array(),
	    $firstLine;

	function addHeader($name, $value) {
		$this->header[$name] = $value;
	}

	function exists($key) {
		return isset($this->header[$key]);
	}

	function getHeader($key) {
		return $this->header[$key];
	}

	function inValue($header, $value) {
		return $this->exists($header)
			&& strpos(strtolower($this->getHeader($header)), $value) !== false;
	}

	function setFirstLine($line) {
		$this->firstLine = $line;
	}

	function getFirstLine() {
		return $this->firstLine;
	}

	function parseResponse($response) {
		$firstBreak = strpos($response, "\r\n");
		if (!$firstBreak) {
			return false;
		}

		$this->setFirstLine(substr($response, 0, $firstBreak));
		$response = substr($response, $firstBreak + 2);

		if (preg_match_all('/(.+) *?: *?(.+) *?\r\n/U', $response, $matches)) {
			$keys	= $matches[1];
			$values	= $matches[2];
			for ($i = 0; $i < count($keys); $i++) {
				$this->addHeader(strtolower($keys[$i]), $values[$i]);
			}
		}

		return true;
	}

	function makeRequest() {
		$request = $this->firstLine."\r\n";
		foreach ($this->header as $name => $value) {
			$request .= $name.': '.$value."\r\n";
		}
		return $request."\r\n";
	}

}

?>