SimpleXMLElement::xpath

(PHP 5, PHP 7, PHP 8)

SimpleXMLElement::xpathRuns XPath query on XML data

Descrizione

public SimpleXMLElement::xpath(string $expression): array|null|false

The xpath method searches the SimpleXML node for children matching the XPath expression.

Elenco dei parametri

expression

An XPath path

Valori restituiti

Returns an array of SimpleXMLElement objects on success; or null or false in case of an error.

Esempi

Example #1 Xpath

<?php
$string
= <<<XML
<a>
<b>
<c>text</c>
<c>stuff</c>
</b>
<d>
<c>code</c>
</d>
</a>
XML;

$xml = new SimpleXMLElement($string);

/* Search for <a><b><c> */
$result = $xml->xpath('/a/b/c');

foreach (
$result as $node) {
echo
'/a/b/c: ',$node,"\n";
}

/* Relative paths also work... */
$result = $xml->xpath('b/c');

foreach (
$result as $node) {
echo
'b/c: ',$node,"\n";
}
?>

Il precedente esempio visualizzerà:

/a/b/c: text
/a/b/c: stuff
b/c: text
b/c: stuff

Notice that the two results are equal.

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