betterCode() PHP 2025

    XSLTProcessor::registerPHPFunctionNS

    (PHP >= 8.4.0)

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

    Опис

    public 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.

    Параметри

    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.

    Помилки/виключення

    • Throws a ValueError if a callback name is not valid.
    • Throws a ValueError if options contains an invalid option.
    • Throws a ValueError if overrideEncoding is an unknown encoding.
    • Throws a TypeError if a given callback is not callable.

    Значення, що повертаються

    Не повертає значень.

    Приклади

    Приклад #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);
    ?>

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