Question

I am trying to retrieve certain values using php xpath evaluate or query. But not able to do it successfully.
Here is the html structure of the page:

<div id="productinfo">
<h2>
<span id="productname">Computer</span>
</h2>
<span id="servieidLabel" style=""> Service ID: </span>
<span id="snLabel" style="display: none"> Serial Number: </span>
<span id="servidno">12345ABCD</span>

I want to display only contents with style=”display:none” or if style attribute is not there at all. So that the result is:- Service ID: 12345ABCD.

I have tried:

$ServLab = $xpath->query("//span[@id='servieidLabel']");
foreach ($ServLab as $entry) {
echo "Service Label:" ,$entry->nodeValue."<br />";
}

Output= Service ID:

and

$servid = $xpath->query("//span[@id='servidno']");
foreach ($servid as $entry) {
echo "Service Id No:" ,$entry->nodeValue."<br />";
}

Output = blank. Whereas the output is supposed to 12345ABCD. What am I missing?

If I try:

$prodid = $xpath->evaluate("//div[@id='productinfo']");
foreach ($prodid as $entry) {
echo $entry->nodeValue."<br />";
}

Output = Service ID: Serial Number:

Please help.

Answer 1

The question you stated first could be solved in a single query. Like this one:

$ServLab = $xpath->query("//div/span[string-length(@style) < 1]");
foreach ($ServLab as $entry) {
    echo $entry->nodeValue."<br />";
}

This will provide

Service ID: 
12345ABCD