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   1 # http\Message http\Client::getHistory()
   2
   3 Simply returns the http\Message chain representing the request/response history.
   4
   5 > **Note:** The history is only recorded while http\Client::$recordHistory is true.
   6
   7 ## Params:
   8
   9 None.
  10
  11 ## Returns:
  12
  13 * http\Message, the request/response message chain representing the client's history.
  14
  15 ## Throws:
  16
  17 * http\Exception\InvalidArgumentException
  18
  19 ## Example:
  20
  21     <?php
  22     $client = new http\Client;
  23     $client->enqueue(new http\Client\Request("HEAD", "http://php.net"));
  24     $client->enqueue(new http\Client\Request("HEAD", "http://pecl.php.net"));
  25     $client->enqueue(new http\Client\Request("HEAD", "http://pear.php.net"));
  26     $client->recordHistory = true;
  27     $client->send();
  28
  29     echo $client->getHistory()->toString(true);
  30
  31 Yields:
  32
  33     HEAD / HTTP/1.1
  34     User-Agent: PECL::HTTP/2.0.0dev (PHP/5.5.5)
  35     Host: pear.php.net
  36     Accept: */*
  37     Content-Length: 0
  38
  39     HTTP/1.1 200 OK
  40     Date: Mon, 04 Nov 2013 15:41:48 GMT
  41     Server: ...
  42     X-Powered-By: PHP/5.3.6
  43     Connection: close
  44     Content-Type: text/html; charset=UTF-8
  45     Content-Length: 0
  46
  47     HEAD / HTTP/1.1
  48     User-Agent: PECL::HTTP/2.0.0dev (PHP/5.5.5)
  49     Host: pecl.php.net
  50     Accept: */*
  51     Content-Length: 0
  52
  53     HTTP/1.1 200 OK
  54     Date: Mon, 04 Nov 2013 14:34:02 GMT
  55     Server: ...
  56     X-Powered-By: PHP/5.2.17
  57     Set-Cookie: ...
  58     Expires: Thu, 19 Nov 1981 08:52:00 GMT
  59     Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
  60     Pragma: no-cache
  61     Connection: close
  62     Content-Type: text/html; charset=ISO-8859-1
  63     Content-Length: 0
  64
  65     HEAD / HTTP/1.1
  66     User-Agent: PECL::HTTP/2.0.0dev (PHP/5.5.5)
  67     Host: php.net
  68     Accept: */*
  69     Content-Length: 0
  70
  71     HTTP/1.1 200 OK
  72     Server: ...
  73     Date: Mon, 04 Nov 2013 14:34:08 GMT
  74     Content-Type: text/html;charset=utf-8
  75     Connection: keep-alive
  76     X-Powered-By: PHP/5.5.4-1
  77     Content-Language: en
  78     Set-Cookie: ...
  79     Last-Modified: Mon, 04 Nov 2013 21:00:36 GMT
  80     Content-Length: 0