better-testing

Headers.php
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			<?php

			namespace Httpful\Response;

			final class Headers implements \ArrayAccess, \Countable {

			private $headers;

			private function __construct($headers)
			{
			$this->headers = $headers;
			}

			public static function fromString($string)
			{
			$lines = preg_split("/(\r\|\n)+/", $string, -1, PREG_SPLIT_NO_EMPTY);
			array_shift($lines); // HTTP HEADER
			$headers = array();
			foreach ($lines as $line) {
			list($name, $value) = explode(':', $line, 2);
			$headers[strtolower(trim($name))] = trim($value);
			}
			return new self($headers);
			}

			public function offsetExists($offset)
			{
			return isset($this->headers[strtolower($offset)]);
			}

			public function offsetGet($offset)
			{
			if (isset($this->headers[$name = strtolower($offset)])) {
			return $this->headers[$name];
			}
			}

			public function offsetSet($offset, $value)
			{
			throw new \Exception("Headers are read-only.");
			}

			public function offsetUnset($offset)
			{
			throw new \Exception("Headers are read-only.");
			}

			public function count()
			{
			return count($this->headers);
			}

			public function toArray()
			{
			return $this->headers;
			}

			}