php-doc-en/reference/xml/functions/xml-set-notation-decl-handler.xml

<?xml version="1.0" encoding="iso-8859-1"?>
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  <refentry id="function.xml-set-notation-decl-handler">
   <refnamediv>
    <refname>xml_set_notation_decl_handler</refname>
    <refpurpose>set up notation declaration handler</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>int</type><methodname>xml_set_notation_decl_handler</methodname>
      <methodparam><type>int</type><parameter>parser</parameter></methodparam>
      <methodparam><type>string</type><parameter>handler</parameter></methodparam>
     </methodsynopsis>
    <para>
     Sets the notation declaration handler function for the XML parser
     <parameter>parser</parameter>.  <parameter>handler</parameter> is
     a string containing the name of a function that must exist when
     <function>xml_parse</function> is called for
     <parameter>parser</parameter>.
    </para>
    <para>
     A notation declaration is part of the document's DTD and has the
     following format: <programlisting role="xml">&lt;!NOTATION
     <parameter>name</parameter> {<parameter>systemId</parameter> |
     <parameter>publicId</parameter>}&gt;</programlisting> See <ulink
     url="&url.rec-xml;#Notations">section 4.7 of the XML 1.0
     spec</ulink> for the definition of notation declarations.
    </para>
    <para>
     The function named by <parameter>handler</parameter> must accept
     five parameters:
     <methodsynopsis>
       <methodname><replaceable>handler</replaceable></methodname>
       <methodparam><type>int</type><parameter>parser</parameter></methodparam>
       <methodparam><type>string</type><parameter>notationName</parameter></methodparam>
       <methodparam><type>string</type><parameter>base</parameter></methodparam>
       <methodparam><type>string</type><parameter>systemId</parameter></methodparam>
       <methodparam><type>string</type><parameter>publicId</parameter></methodparam>
     </methodsynopsis>
     <variablelist>
      <varlistentry>
       <term>
    <parameter>parser</parameter>
       </term> 
       <listitem>
    <simpara>
     The first parameter, <replaceable>parser</replaceable>, is a
     reference to the XML parser calling the
     handler.
    </simpara>
       </listitem>
      </varlistentry>
      <varlistentry>
       <term><parameter>notationName</parameter></term>
       <listitem>
    <simpara>
     This is the notation's <parameter>name</parameter>, as per
     the notation format described above.
    </simpara>
       </listitem>
      </varlistentry>
      <varlistentry>
       <term>
    <parameter>base</parameter>
       </term>
       <listitem>
    <simpara>
     This is the base for resolving the system identifier
     (<parameter>systemId</parameter>) of the notation
     declaration.  Currently this parameter will always be set to
     an empty string.
    </simpara>
       </listitem>
      </varlistentry>
      <varlistentry>
       <term><parameter>systemId</parameter></term>
       <listitem>
    <simpara>
     System identifier of the external notation
     declaration.
    </simpara>
       </listitem>
      </varlistentry>
      <varlistentry>
       <term>
    <parameter>publicId</parameter>
       </term>
       <listitem>
    <simpara>
     Public identifier of the external notation
     declaration.
    </simpara>
       </listitem>
      </varlistentry>
     </variablelist>
    </para>
    <para>
     If a handler function is set to an empty string, or
     &false;, the handler in question is
     disabled.
    </para>
    <para>
     &true; is returned if the handler is set up, &false; if
     <parameter>parser</parameter> is not a parser.
    </para>
    &note.func-callback;
   </refsect1>
  </refentry>

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