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PHP - Manual: XSLTProcessor::registerPHPFunctionNS

2025-02-27

XSLTProcessor::registerPHPFunctionNS

(PHP >= 8.4.0)

XSLTProcessor::registerPHPFunctionNSRegister a PHP function as namespaced XSLT function

说明

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.

参数

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.

错误/异常

  • 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.

返回值

没有返回值。

示例

示例 #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);
?>

参见

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官方地址:https://www.php.net/manual/en/xsltprocessor.registerphpfunctionns.php

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