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   1 # pecl/http v2
   2
   3 ## About:
   4
   5 Extended HTTP support. Again.
   6
   7 * Introduces the http namespace.
   8 * PHP stream based message bodies.
   9 * Encapsulated env request/response.
  10 * Modular client support.
  11
  12 ## Installation:
  13
  14 This extension is hosted at [PECL](http://pecl.php.net) and can be installed with [PEAR](http://pear.php.net)'s pecl command:
  15
  16     # pecl install pecl_http
  17
  18 ## Dependencies:
  19
  20 pecl/http depends on a number of system libraries and PHP extensions for special features.
  21
  22 #### Required system libraries:
  23
  24 The following system libraries are required to build this extension:
  25
  26 =zlib=
  27         Provides gzip/zlib/deflate encoding.
  28         Minimum version: 1.2.0.4
  29         Install on Debian: `apt-get install zlib1g-dev`
  30
  31
  32 #### Optional system libraries:
  33
  34 The following system libraries are optional and provide additional features:
  35
  36 =libidn=
  37         Provides IDNA support in URLs.
  38         Minimum version: none
  39         Install on Debian: `apt-get install libidn11-dev`
  40
  41 =libcurl=
  42         Provides HTTP request functionality.
  43         Minimum version: 7.18.2
  44         Install on Debian: `apt-get install libcurl4-openssl-dev`
  45         Note: There are usually different styles of SSL support for libcurl available, so you can replace 'openssl' in the above command f.e. with 'nss' or 'gnutls'.
  46
  47 =libevent=
  48         Eventloop support for the HTTP client.
  49         Minimum version: none
  50         Install on Debian: `apt-get install libevent-dev`
  51
  52 ### PHP extensions:
  53
  54 This extension unconditionally depends on the pre-loaded presence of the following PHP extensions:
  55
  56 * raphf
  57 * propro
  58 * spl
  59
  60
  61 If configured ```--with-http-shared-deps``` (default) it depends on the pre-loaded presence of the following extensions, as long as they were available at build time:
  62
  63 * hash
  64 * iconv
  65 * json (only until < 2.4.0)
  66
  67 Please ensure that all extension on which pecl/http depends, are loaded before it, e.g in your `php.ini`:
  68
  69         ; obligatory deps
  70         extension = raphf.so
  71         extension = propro.so
  72
  73         ; if shared deps were enabled
  74         extension = hash.so
  75         extension = iconv.so
  76         extension = json.so
  77
  78         ; finally load pecl/http
  79         extension = http.so
  80
  81 ## Conflicts:
  82
  83 pecl/http-v2 conflicts with the following extensions:
  84
  85 * http-v1
  86 * event (only until <= 2.0.3)
  87
  88 ## INI Directives:
  89
  90 * http.etag.mode = "crc32b"
  91   Default hash method for dynamic response payloads to generate an ETag.
  92
  93 ## Stream Filters:
  94
  95 The http extension registers the ```http.*``` namespace for its stream filters. Provided stream filters are:
  96
  97 * http.chunked_decode
  98   Decode a stream encoded with chunked transfer encoding.
  99 * http.chunked_encode
 100   Encode a stream with chunked transfer encoding.
 101 * http.inflate
 102   Decode a stream encoded with deflate/zlib/gzip encoding.
 103 * http.deflate
 104   Encode a stream with deflate/zlib/gzip encoding.
 105
 106 ## Changelog:
 107
 108 Version | Change
 109 --------|-------
 110 2.0.4   | Dropped the pecl/event conflict.
 111 2.4.0   | Dropped the ext/json dependency.