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xptr_eval
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xptr_eval

Name

xptr_eval — Evaluates an XPointer expression.

Synopsis

object xptr_eval(xpcontext, expression); object xpcontext: A reference to an xpath context object string expression: The expression to be evaluated

Returns

An Xpath object on success or FALSE on error.

Description

Evalutes an XPointer expression, which is similair to an XPath expression.

Version

PHP 4 >= 4.0.4

Example

Example 265. Example

//create an XML document
$doc = xmldoc("1.0");
$root = $doc->add_root("HTML ");
$head = $root->new_child("HEAD", "");
$head->set_attribute("Language","english");
$head->set_attribute("Region","USA");
$head->set_attribute("Region","free");
$title = $head->new_child("TITLE", "Hello World");
$root->new_child("BODY","This is the body");

//evaluate the xpath expression
$ctx=xpath_new_context($doc); 
$xpo=xptr_eval($ctx,"title"); 
print_r($xpo);

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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.