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

<refentry xml:id="function.yaml-parse" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>yaml_parse</refname>
  <refpurpose>Parse a YAML stream</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>mixed</type><methodname>yaml_parse</methodname>
   <methodparam><type>string</type><parameter>input</parameter></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>pos</parameter><initializer>0</initializer></methodparam>
   <methodparam choice="opt"><type>int</type><parameter role="reference">ndocs</parameter></methodparam>
   <methodparam choice="opt"><type>array</type><parameter>callbacks</parameter><initializer>&null;</initializer></methodparam>
  </methodsynopsis>
  <para>
   Convert all or part of a YAML document stream to a PHP variable.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>input</parameter></term>
     <listitem>
      <para>
       The <type>string</type> to parse as a YAML document stream.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>pos</parameter></term>
     <listitem>
      <para>
       Document to extract from stream (<literal>-1</literal> for all
       documents, <literal>0</literal> for first document, ...).
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>ndocs</parameter></term>
     <listitem>
      <para>
       If <parameter>ndocs</parameter> is provided, then it is filled with the
       number of documents found in stream.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>callbacks</parameter></term>
     <listitem>
      <para>
       Content handlers for YAML nodes. Associative <type>array</type> of YAML
       tag =&gt; <type>callable</type> mappings. See
       <link linkend="yaml.callbacks.parse">parse callbacks</link> for more
       details.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns the value encoded in <parameter>input</parameter> in appropriate
   PHP type&return.falseforfailure;. If <parameter>pos</parameter> is <literal>-1</literal> an
   <type>array</type> will be returned with one entry for each document found
   in the stream.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>yaml_parse</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
$yaml = <<<EOD
---
invoice: 34843
date: "2001-01-23"
bill-to: &id001
  given: Chris
  family: Dumars
  address:
    lines: |-
      458 Walkman Dr.
              Suite #292
    city: Royal Oak
    state: MI
    postal: 48046
ship-to: *id001
product:
- sku: BL394D
  quantity: 4
  description: Basketball
  price: 450
- sku: BL4438H
  quantity: 1
  description: Super Hoop
  price: 2392
tax: 251.420000
total: 4443.520000
comments: Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338.
...
EOD;

$parsed = yaml_parse($yaml);
var_dump($parsed);
?>
]]>
    </programlisting>
    &example.outputs.similar;
    <screen>
<![CDATA[
array(8) {
  ["invoice"]=>
  int(34843)
  ["date"]=>
  string(10) "2001-01-23"
  ["bill-to"]=>
  &array(3) {
    ["given"]=>
    string(5) "Chris"
    ["family"]=>
    string(6) "Dumars"
    ["address"]=>
    array(4) {
      ["lines"]=>
      string(34) "458 Walkman Dr.
        Suite #292"
      ["city"]=>
      string(9) "Royal Oak"
      ["state"]=>
      string(2) "MI"
      ["postal"]=>
      int(48046)
    }
  }
  ["ship-to"]=>
  &array(3) {
    ["given"]=>
    string(5) "Chris"
    ["family"]=>
    string(6) "Dumars"
    ["address"]=>
    array(4) {
      ["lines"]=>
      string(34) "458 Walkman Dr.
        Suite #292"
      ["city"]=>
      string(9) "Royal Oak"
      ["state"]=>
      string(2) "MI"
      ["postal"]=>
      int(48046)
    }
  }
  ["product"]=>
  array(2) {
    [0]=>
    array(4) {
      ["sku"]=>
      string(6) "BL394D"
      ["quantity"]=>
      int(4)
      ["description"]=>
      string(10) "Basketball"
      ["price"]=>
      int(450)
    }
    [1]=>
    array(4) {
      ["sku"]=>
      string(7) "BL4438H"
      ["quantity"]=>
      int(1)
      ["description"]=>
      string(10) "Super Hoop"
      ["price"]=>
      int(2392)
    }
  }
  ["tax"]=>
  float(251.42)
  ["total"]=>
  float(4443.52)
  ["comments"]=>
  string(68) "Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338."
}
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="notes">
  &reftitle.notes;
  <warning>
   <para>
    Processing untrusted user input with <function>yaml_parse</function>
    is dangerous if the use of <function>unserialize</function> is enabled for
    nodes using the <literal>!php/object</literal> tag. This behavior can be
    disabled by using the <literal>yaml.decode_php</literal> ini setting.
   </para>
  </warning>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>yaml_parse_file</function></member>
    <member><function>yaml_parse_url</function></member>
    <member><function>yaml_emit</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
