XSLTProcessor::registerPHPFunctionNS

(PHP >= 8.4.0)

XSLTProcessor::registerPHPFunctionNS — Register a PHP function as namespaced XSLT function

Beschreibung

public function XSLTProcessor::registerPHPFunctionNS(string $namespaceURI, string $name, callable $callable): void

This method enables the ability to use a PHP function as a namespaced XSLT functions within XSL stylesheets.

Parameter-Liste

namespaceURI

The URI of the namespace.

name

The local function name inside the namespace.

callable

The PHP function to call when the XSL function gets called within the stylesheet. When a node list is passed as parameter to the callback, the argument becomes an array containing the matched dom nodes.

Fehler/Exceptions

  • Throws a ValueError if a callback name is not valid.

  • Wenn options eine ungültige Option enthält, wird ein ValueError ausgelöst.

  • Wenn overrideEncoding eine unbekannte Kodierung ist, wird ein ValueError ausgelöst.

  • Throws a TypeError if a given callback is not callable.

Rückgabewerte

Es wird kein Wert zurückgegeben.

Beispiele

Beispiel #1 Simple PHP Function call from a stylesheet

<?php
$xml = <<<EOB
<allusers>
<user>
 <uid>bob</uid>
</user>
<user>
 <uid>joe</uid>
</user>
</allusers>
EOB;
$xsl = <<<EOB
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:my="urn:my.ns">
<xsl:output method="html" encoding="utf-8" indent="yes"/>
<xsl:template match="allusers">
 <html><body>
   <h2><xsl:value-of select="my:count(user/uid)" /> users</h2>
   <table>
   <xsl:for-each select="user">
     <tr>
      <td>
       <xsl:value-of select="my:uppercase(string(uid))"/>
      </td>
     </tr>
   </xsl:for-each>
   </table>
 </body></html>
</xsl:template>
</xsl:stylesheet>
EOB;
$xmldoc = new DOMDocument();
$xmldoc->loadXML($xml);
$xsldoc = new DOMDocument();
$xsldoc->loadXML($xsl);

$proc = new XSLTProcessor();
$proc->registerPHPFunctionNS('urn:my.ns', 'uppercase', strtoupper(...));
$proc->registerPHPFunctionNS('urn:my.ns', 'count', fn (array $arg1) => count($arg1));
$proc->importStyleSheet($xsldoc);
echo $proc->transformToXML($xmldoc);
?>

Siehe auch

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