Compzone.Org :: Podręcznik PHP :: xpath_eval_expression

Podręcznik PHP
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xpath_eval_expression

(PHP 4 >= 4.0.4, PECL)

xpath_eval_expression -- Evaluates the XPath Location Path in the given string

Opis

class XPathContext {

XPathObject xpath_eval_expression ( string expression [, domnode contextnode] )

}XPathObject xpath_eval_expression ( XPathContext xpath_context, string expression [, domnode contextnode] )

Przykład 1. xpath_eval_expression() Example

<?php

                
include("example.inc");

                

                if (!$dom = domxml_open_mem($xmlstr)) {

                    echo "Error while parsing the document\n";


                    exit;

                }

                
$xpath = xpath_new_context($dom);

                var_dump(xpath_eval_expression($xpath, '/chapter/@language'));


                
?>

Powyższy przykład wyświetli:

object(XPathObject)(2) {
   ["type"]=>
   int(1)
   ["nodeset"]=>
   array(1) {
     [0]=>
     object(domattribute)(5) {
       ["type"]=>
       int(2)
       ["name"]=>
       string(8) "language"
       ["value"]=>
       string(2) "en"
       [0]=>
       int(7)
       [1]=>
       int(138004256)
     }
  }
}