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 PHP manuál : function.xpath-eval-expression.html

xpath_eval_expression
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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

Description

XPathObject xpath_eval_expression ( XPathContext xpath_context, string expression )

Warning

This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

Example 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'));

?>

The above example will output:

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)
     }
  }
}

See also xpath_eval().

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