php-doc-en/reference/xsl/reference.xml

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 <reference id="ref.xsl">
  <title>XSL functions</title>
  <titleabbrev>XSL</titleabbrev>

  <partintro>

   <section id="xsl.intro">
    &reftitle.intro;
    <para>
     The XSL extension implements the XSL standard, performing <ulink 
     url="&url.xslt;">XSLT transformations</ulink> using the <ulink 
     url="&url.libxslt;">libxslt library</ulink>
    </para>
   </section>

   <section id="xsl.requirements">
    &reftitle.required;
    <para>
     This extension uses <productname>libxslt</productname> which can be
     found at <ulink url="&url.libxslt;">&url.libxslt;</ulink>. libxslt
     version 1.0.18 or greater is required.
    </para>
   </section>

   &reference.xsl.configure;

   <section id='xsl.classes'>
    &reftitle.classes;
    <para>
    </para>

    <section id='xsl.class.xsltprocessor'>
     <title><classname>XSLTProcessor</classname></title>
     <para>
      </para>
     <section id='xsl.class.xsltprocessor.constructor'>
      &reftitle.constructor;
      <itemizedlist>
       <listitem>
        <para><xref linkend='function.xsl-xsltprocessor-construct' /> - construct a new XSLTProcessor object</para>
       </listitem>
      </itemizedlist>
     </section>
     <section id='xsl.class.xsltprocessor.methods'>
      &reftitle.methods;
      <itemizedlist>
       <listitem>
        <para><xref linkend="function.xsl-xsltprocessor-get-parameter" /> - Get value of a parameter</para>
       </listitem>
       <listitem>
        <para><xref linkend="function.xsl-xsltprocessor-has-exslt-support" /> - Determine if PHP has EXSLT support</para>
       </listitem>
       <listitem>
        <para><xref linkend="function.xsl-xsltprocessor-import-stylesheet" /> - Import stylesheet</para>
       </listitem>
       <listitem>
        <para><xref linkend="function.xsl-xsltprocessor-register-php-functions" /> - Enables the ability to use PHP functions as XSLT functions</para>
       </listitem>
       <listitem>
        <para><xref linkend="function.xsl-xsltprocessor-remove-parameter" /> - Remove parameter</para>
       </listitem>
       <listitem>
        <para><xref linkend="function.xsl-xsltprocessor-set-parameter" /> - Set value for a parameter</para>
       </listitem>
       <listitem>
        <para><xref linkend="function.xsl-xsltprocessor-transform-to-doc" /> - Transform to DOMDocument</para>
       </listitem>
       <listitem>
        <para><xref linkend="function.xsl-xsltprocessor-transform-to-uri" /> - Transform to URI</para>
       </listitem>
       <listitem>
        <para><xref linkend="function.xsl-xsltprocessor-transform-to-xml" /> - Transform to XML</para>
       </listitem>
      </itemizedlist>
     </section>
    </section>
   </section>
   
   <section id="xsl.examples">
    &reftitle.examples;
    <para>
     Many examples in this reference require both an XML and an XSL file.
     We will use <filename>collection.xml</filename> and 
     <filename>collection.xsl</filename> that contains the following:
    </para>
    <para>
     <example>
      <title>collection.xml</title>
      <programlisting role="xml">
<![CDATA[
<collection>
 <cd>
  <title>Fight for your mind</title>
  <artist>Ben Harper</artist>
  <year>1995</year>
 </cd>
 <cd>
  <title>Electric Ladyland</title>
  <artist>Jimi Hendrix</artist>
  <year>1997</year>
 </cd>
</collection>
]]>
      </programlisting>
     </example>
     <example>
      <title>collection.xsl</title>
      <programlisting role="xml">
<![CDATA[
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 <xsl:param name="owner" select="'Nicolas Eliaszewicz'"/>
 <xsl:output method="html" encoding="iso-8859-1" indent="no"/>
 <xsl:template match="collection">
  Hey! Welcome to <xsl:value-of select="$owner"/>'s sweet CD collection! 
  <xsl:apply-templates/>
 </xsl:template>
 <xsl:template match="cd">
  <h1><xsl:value-of select="title"/></h1>
  <h2>by <xsl:value-of select="artist"/> - <xsl:value-of select="year"/></h2>
  <hr />
 </xsl:template>
</xsl:stylesheet>
]]>
      </programlisting>
     </example>
    </para>
   </section>
      
   &reference.xsl.constants;
      
  </partintro>

 &reference.xsl.functions;

 </reference>
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