php-doc-en/functions/curl.xml

 <reference id="ref.curl">
  <title>CURL Client URL Library Functions</title>
  <titleabbrev>CURL</titleabbrev>

  <partintro>
   <simpara>
    The CURL module is currently experimental and incomplete. Do
    not rely on it.
   </simpara>
   <simpara>
    In order to use the CURL functions you need to install the <ulink
    url="&url.curl;">CURL</ulink> package. PHP requires that you use
    the 7.0.2-beta version. Version 6.5.2 will not do.
   </simpara>
   <simpara>
    As this documentation is currently as incomplete and
    experimental as the module itself, you should rely on the
    CURL C-API documentation for a list of option names and
    additional information.
   </simpara>
  </partintro>

  <refentry id="function.curl-init">
   <refnamediv>
    <refname>curl_init</refname>
    <refpurpose>Initialize a CURL session</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <funcsynopsis>
     <funcprototype>
      <funcdef>int <function>curl_init</function></funcdef>
      <paramdef>string <parameter>curl</parameter></paramdef>
     </funcprototype>
    </funcsynopsis>
    <para>
     This function must be the first function to call, and it returns
     a CURL handle that you shall use as input to the other
     curl-functions.  The init calls intializes curl.
    </para>
    <para>
     If this function returns false, something went wrong and you
     cannot use the other curl functions.
    </para>
   </refsect1>
  </refentry>

  <refentry id="function.curl-setopt">
   <refnamediv>
    <refname>curl_setopt</refname>
    <refpurpose>Set an option for a CURL transfer</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <funcsynopsis>
     <funcprototype>
      <funcdef>bool <function>curl_setopt</function></funcdef>
      <paramdef>int <parameter>ch</parameter></paramdef>
      <paramdef>string <parameter>option</parameter></paramdef>
      <paramdef>mixed <parameter>value</parameter></paramdef>
     </funcprototype>
    </funcsynopsis>
    <para>
     TODO
    </para>
   </refsect1>
  </refentry>

  <refentry id="function.curl-exec">
   <refnamediv>
    <refname>curl_exec</refname>
    <refpurpose>Perform a CURL session</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <funcsynopsis>
     <funcprototype>
      <funcdef>bool <function>curl_exec</function></funcdef>
      <paramdef>int <parameter>ch</parameter></paramdef>
     </funcprototype>
    </funcsynopsis>
    <para>
     This function is called after the init and all the
     <function>curl_easy_setopt</funtion> calls are made, and will
     perform the transfer as described in the options. It must be
     called with the same handle as input as the
     <function>curl_easy_init</function> call returned.
    </para>
   </refsect1>
  </refentry>

  <refentry id="function.curl-close">
   <refnamediv>
    <refname>curl_close</refname>
    <refpurpose>Close a CURL session</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <funcsynopsis>
     <funcprototype>
      <funcdef>void <function>curl_close</function></funcdef>
      <paramdef>int <parameter>ch</parameter></paramdef>
     </funcprototype>
    </funcsynopsis>
    <para>
     This functions closes a CURL session and frees all ressources.
     The CURL handle <parameter>ch</parameter> becomes invalid.
    </para>
   </refsect1>
  </refentry>

 </reference>

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