I have errors when I want to print the result of an evaluate expression with XPath.
$url = $xpath->evaluate('//a/@href', $event); echo $url ;
I have this error : Catchable fatal error: Object of class DOMNodeList could not be converted to string
My code :
<?php
// Get the HTML Source Code
$url='http://www.parisbouge.com/events/2012/05/01/';
$source = file_get_contents($url);
// DOM document Creation
$doc = new DOMDocument;
$doc->loadHTML($source);
// DOM XPath Creation
$xpath = new DOMXPath($doc);
// Get all events
$events = $xpath->query('//li[@class="nom"]');
// Count number of events
printf('There is %d events<br />', $events->length);
// List all events
for($i = 0; $i < ($events->length); $i++) {
$event = $events->item($i);
$url = $xpath->evaluate('//a/@href', $event);
$nom = $xpath->evaluate('//a/text()', $event);
$lieu = $xpath->evaluate('../li[@class="lieu"]/a/text()', $event);
echo "Result : $url $nom $lieu <br/>";
}
?>
Try this to get information about nodes.
// List all events
for($i = 0; $i < ($events->length); $i++) {
$event = $events->item($i);
$url = $xpath->evaluate('.//a/@href', $event);
$nom = $xpath->evaluate('.//a/text()', $event);
$lieu = $xpath->evaluate('../li[@class="lieu"]/a/text()', $event);
$result = '';
if ($url->length > 0) {
$result .= $url->item(0)->value;
}
if ($nom->length > 0) {
$result .= $nom->item(0)->wholeText;
}
if ($lieu->length > 0) {
$result .= $lieu->item(0)->wholeText;
}
echo $result . "<br />";
//echo "Result : " . $url->item(0)->value . ' | ' . $nom->item(0)->wholeText . ' | ' . $lieu->item(0)->wholeText . "<br/>";
}
Don't forget add checking if node exists etc. To check if there is any nodes you can check nodeList lenght or suppres errors how "Gordon" suggested.