eio-custom.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->

<refentry xml:id="function.eio-custom" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>eio_custom</refname>
  <refpurpose>Execute custom request like any other <emphasis>eio_*</emphasis> call</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>resource</type><methodname>eio_custom</methodname>
   <methodparam><type>callable</type><parameter>execute</parameter></methodparam>
   <methodparam><type>int</type><parameter>pri</parameter></methodparam>
   <methodparam><type>callable</type><parameter>callback</parameter></methodparam>
   <methodparam
   choice="opt"><type>mixed</type><parameter>data</parameter><initializer>NULL</initializer></methodparam>
  </methodsynopsis>
  <para>
   <function>eio_custom</function> executes custom function specified by
   <parameter>execute</parameter> processing it just like any other <emphasis>eio_*</emphasis> call.
  </para>


 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <variablelist>
   <varlistentry>
    <term><parameter>execute</parameter></term>
    <listitem>
     <para>
      Specifies the request function that should match the following prototype:

      <programlisting><![CDATA[
      mixed execute(mixed data);
      ]]></programlisting>
      <parameter>callback</parameter> is event completion callback that should match the following
      prototype:
      <programlisting><![CDATA[
      void callback(mixed data, mixed result);
      ]]></programlisting>

     <parameter>data</parameter> is the data passed to
     <parameter>execute</parameter> via <parameter>data</parameter> argument
      without modifications
      <parameter>result</parameter> value returned by <parameter>execute</parameter>
     </para>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>pri</parameter></term>
    <listitem>
    &eio.request.pri.values;
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>callback</parameter></term>
    <listitem>
     &eio.callback.proto;
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>data</parameter></term>
    <listitem>
     <para>
     Arbitrary variable passed to <parameter>callback</parameter>.
     </para>
    </listitem>
   </varlistentry>
  </variablelist>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   <function>eio_custom</function> returns request resource on success,&return.falseforfailure;.
  </para>
 </refsect1>



 <refsect1 role="examples">
  &reftitle.examples;
  <example>
   <title><function>eio_custom</function> example</title>
 <programlisting role="php">
 <![CDATA[
<?php
/* Callback for the custom callback */
function my_custom_callback($data, $result) {
    var_dump($data);
    var_dump(count($result));
    var_dump($result['data_modified']);
    var_dump($result['result']);
}

/* The custom request */
function my_custom($data) {
    var_dump($data);

    $result  = array(
        'result'        => 1001,
        'data_modified' => "my custom data",
    );

    return $result;
}

$data = "my_custom_data";
$req = eio_custom("my_custom", EIO_PRI_DEFAULT, "my_custom_callback", $data);
var_dump($req);
eio_event_loop();
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
 <![CDATA[
resource(4) of type (EIO Request Descriptor)
string(14) "my_custom_data"
string(14) "my_custom_data"
int(2)
string(14) "my custom data"
int(1001)
 ]]>
 </screen>
  </example>
 </refsect1>

</refentry>

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