Úvod Webhosting Cenník Nastavenia služieb Referencie Reklama Kontakty CONTROL PANEL

 
 PHP manuál : function.dom-domxpath-evaluate.html

DOMXPath->evaluate()
PHP Manual
PrevNext

DOMXPath->evaluate()

(no version information, might be only in CVS)

DOMXPath->evaluate() --  Evaluates the given XPath expression and returns a typed result if possible.

Description

class DOMXPath {

mixed evaluate ( string expression [, DOMNode contextnode] )

}

Executes the given XPath expression and returns a typed result if possible.

Parameters

expression

The XPath expression to execute.

contextnode

The optional contextnode can be specified for doing relative XPath queries. By default, the queries are relative to the root element.

Return Values

Returns a typed result if possible or a DOMNodeList containing all nodes matching the given XPath expression.

Examples

Example 1. Getting the count of all the english books

<?php

$doc = new DOMDocument;

$doc->load('book.xml');

$xpath = new DOMXPath($doc);

$tbody = $doc->getElementsByTagName('tbody')->item(0);

// our query is relative to the tbody node
$query = 'count(row/entry[. = "en"])';

$entries = $xpath->evaluate($query, $tbody);
echo "There are $entries english books\n";

?>

The above example will output:

There are 2 english books

See Also

DOMXPath->query()

PrevHomeNext
DOMXPath->__construct()UpDOMXPath->query()

webmailWebmail


Zaujímavé linky



inzerat.sk - bezplatna inzercia, inzeraty, autobazar, reality

Slovak companies and manufacturers directory

Katalog slovenskych firiem a vyrobkov
Suppliers and products directory
 created by RealData (2005)
 www.realdata.sk  
Všetky ceny sú s 20% DPH.    Konverzny kurz: 1 EUR = 30,1260 SKK
Ceny nezahŕňajú ročný udržiavací poplatok za doménu, ktorý platíme jednotlivým správcom domén.

stránka vygenerovaná za 0.241s

webhosting zaregistrujte si domenu