Solution to the problem that php functions cannot be called after registerPHPFunctions in XSLTProcessor_PHP Tutorial

XSLT is a very convenient tool for converting XML. It is implemented in PHP through XSLTProcessor. There are many useful functions built into XSLT. At the same time, we only need to call the registerPHPFunctions method of the XSLTProcessor instance, and we can use it directly in XSLT. PHP functions, which greatly enhance the processing capabilities of XSLT.

However, when using PHP functions in XSLT, many people will encounter the following two errors:

(1) Warning: XSLTProcessor::transformToXml(): xmlXPathCompiledEval: 1 objects left o
n the stack.
(2) PHP Warning: XSLTProcessor::transformToXml(): xmlXPathCompOpEval: function func
tion bound to undefined prefix php in ….

bob

The code is as follows

代码如下

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$xml = <<     bob       joe   EOB; $xsl = << xmlns:xsl="http://www.w3.org/1999/XSL/Transform">         Users                               select="php:function('ucfirst',string(uid))"/>           EOB; $xmldoc = DOMDocument::loadXML($xml); $xsldoc = DOMDocument::loadXML($xsl);   $proc = new XSLTProcessor(); $proc->registerPHPFunctions(); $proc->importStyleSheet($xsldoc); echo $proc->transformToXML($xmldoc); ?>

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代码如下	复制代码
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

$xml = <<

代码如下	复制代码
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:php="http://php.net/xsl">

joe EOB; $xsl = << xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

Users

                                                                                select="php:function('ucfirst',string(uid))"/>

EOB; $xmldoc = DOMDocument::loadXML($xml); $xsldoc = DOMDocument::loadXML($xsl); $proc = new XSLTProcessor(); $proc->registerPHPFunctions(); $proc->importStyleSheet($xsldoc); echo $proc->transformToXML($xmldoc); ?> Actually, this error occurs because we have not defined PHP namespace, we only need to add it in

The code is as follows

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xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> This problem can be solved by adding xmlns:php="http://php.net/xsl" in , that is,

The code is as follows	Copy code
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"<🎜> xmlns:php="http://php.net/xsl"> http://www.bkjia.com/PHPjc/632243.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632243.htmlTechArticleXSLT is a very convenient tool for converting XML. It is implemented in PHP through XSLTProcessor; XSLT has many built-in Useful functions, at the same time, only need to call the XSLTProcessor instance...