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PHP : Function Reference : XML-RPC Functions : xmlrpc_encode

xmlrpc_encode

Generates XML for a PHP value (PHP 4 >= 4.0.7, PHP 5)
string xmlrpc_encode ( mixed value )

Warning:

This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

Warning:

This function is currently not documented; only the argument list is available.

Related Examples ( Source code ) » xmlrpc_encode



Code Examples / Notes » xmlrpc_encode

dave dot wilcock

Worth noting, you can use this function to generate fault response xml.
If you pass a pre-determined array into this function, as follows
<?
$myArray = array ("faultCode"=>1,"faultString"=>"Too many params");
$xml = xmlrpc_encode($myArray);
?>
... you will get output much like the following:
<?xml version="1.0" encoding="utf-8"?>
<fault>
<value>
<struct>
 <member>
  <name>faultCode</name>
  <value>
   <int>4</int>
  </value>
 </member>
 <member>
  <name>faultString</name>
  <value>
   <string>Too many params</string>
  </value>
 </member>
</struct>
</value>
</fault>
All that is needed to do here to make it valid XML-RPC is inject some of your own methodResponse tags.
Check the XML-RPC specification at http://www.xmlrpc.com/spec


hfuecks

This function would be used by an XML-RPC server to convert PHP variables into an XML-RPC response.
It would be used within the PHP functions defined using xmlrpc_server_register_method()
Uses PHP variable reflection to assign the correct data types for the XML-RPC response. For example;
<?php
$params = array ( "one"=>"red","two"=>"blue","three"=>"green" );
$response = xmlrpc_encode ( $params );
echo ( $response );
?>
Produces;
<?xml version='1.0' encoding="utf-8" ?>
<params>
<param>
<value>
 <struct>
  <member>
   <name>one</name>
   <value>
    <string>red</string>
   </value>
  </member>
  <member>
   <name>two</name>
   <value>
    <string>blue</string>
   </value>
  </member>
  <member>
   <name>three</name>
   <value>
    <string>green</string>
   </value>
  </member>
 </struct>
</value>
</param>
</params>
While
<?php
$params = array ( "red", "blue", "green" );
$response = xmlrpc_encode ( $params );
echo ( $response );
?>
produces;
<?xml version='1.0' encoding="utf-8" ?>
<params>
<param>
<value>
 <array>
  <data>
   <value>
    <string>red</string>
   </value>
   <value>
    <string>blue</string>
   </value>
   <value>
    <string>green</string>
   </value>
  </data>
 </array>
</value>
</param>
</params>
And
<?php
$params = 1;
$response = xmlrpc_encode ( $params );
echo ( $response );
?>
produces
<?xml version='1.0' encoding="utf-8" ?>
<params>
<param>
<value>
 <int>1</int>
</value>
</param>
</params>
It's useful to be aware of the settype() function (http://www.php.net/settype).
For binary base64 data and XML-RPC iso8601 date times the xmlrpc_set_type() function should be used on a PHP variable before using xmlrpc_encode()


amir.laheratcomplinetdotcom

Beware this quirk: when you xmlrpc_encode a hash into xmlrpc, numeric keys will not be kept. Even strings containing numbers-only will be lost.
i.e.: xmlrpc_decode(xmlrpc_encode(array('123'=>456)));
returns: array(0=>456);
Apparently this is intentional functionality (see http://bugs.php.net/bug.php?id=21949)
2 workarounds:
1. prepend/append a string (even whitespace) to all keys, and strip them out at the other end. eg array('key_123'=>456);
2. create an array of hashes. array(array('key'=>123,'value'=>456));
I favour the second option because it's more deliberate.
... this also applies to xmlrpc_encode_request()


08-jun-2006 03:32

Another quirk (more of a bug i think) is the automatic encoding of hashes where all keys that begin with a digit between 1 and 9 are lost:
http://bugs.php.net/bug.php?id=37746
Luckily I found a quick workaround. Just append chr(0x00) to your keys and the xmlrpc response will be correct. Maybe this will apply to encoding of hashes for requests too.


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xmlrpc_decode_request
xmlrpc_decode
xmlrpc_encode_request
xmlrpc_encode
xmlrpc_get_type
xmlrpc_is_fault
xmlrpc_parse_method_descriptions
xmlrpc_server_add_introspection_data
xmlrpc_server_call_method
xmlrpc_server_create
xmlrpc_server_destroy
xmlrpc_server_register_introspection_callback
xmlrpc_server_register_method
xmlrpc_set_type
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