Passing Parameters to an XSLT Stylesheet
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| If you need to pass data from the PHP script to the XSLT stylesheet, PHP's xslt_process() function can be used to pass an associative arrays of parameters to the XSLT stylesheet. You'll remember that the xslt_process() function can accept an array containing parameter-value pairs as an optional sixth argument. These parameters can be passed on to the stylesheet and used within template rules. Consider Listing 4.8, which creates an associative array named $params , and stores two elements containing the page title and current date in it. This associative array is then passed on to the stylesheet via the xslt_process() function. Listing 4.8 Passing Parameters to an XSLT Stylesheet <?php // set the filenames $xml_file = "aloha.xml"; $xslt_file = "aloha.xsl"; // set up the parameters $params = array("today" => date("d M Y", mktime()), "page_title" => "Aloha!"); // include an empty array for arguments (otherwise XSLT tends to break - hopefully These parameters are now available to the stylesheet and can be used within a template rule via the <xsl:param /> element (see Listing 4.9). Listing 4.9 Using Passed Parameters in an XSLT Stylesheet<?xml version="1.0"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <!-- define the parameter --> <xsl:param name="page_title"/> <xsl:param name="today"/> <xsl:template match="/"> <html> <head> <!-- use the parameter --> <title><xsl:value-of select="$page_title" /> Today is <xsl:value-of select="$today" |
corrected in next release) $arg_buffer = array(); // create the XSLT processor $xp = xslt_create() or die("Could not create XSLT processor"); // process the two files to get the desired output if($result = xslt_process($xp, $xml_file, $xslt_file, NULL, $arg_buffer, $params)) { echo $result; } else { echo "An error occurred: " . xslt_error($xp) . "(error code " . xslt_errno($xp) . | I l @ ve RuBoard |
