Why the query doesn't match the DOM?

Question

Here is my code:

$res = file_get_contents("http://www.lenzor.com/photo/search/index/type/user/%D8%B9%D9%84%DB%8C//text/%D9%81%D8%A7%D8%B7%D9%85%D9%87");

$doc = new \DOMDocument();
@$doc->loadHTMLFile($res);
$xpath = new \DOMXpath($doc);
$links = $xpath->query("//ul[@class='user_box']/li");
$result = array();
if (!is_null($links)) {
    foreach ($links as $link) {
        $href = $link->getAttribute('class');
        $result[] = [$href];
    }
}

print_r($result);

Here is the content I'm working on. I mean it's the result of echo $res.

Ok well, the result of my code is an empty array. So $links is empty and that foreach won't be executed. Why? Why //ul[@class='user_box']/li query doesn't match the DOM ?

Expected result is an array contains the class attribute of lis.

@SahilGulati Yes .. however it's just an example. I want to see a working version of the code. — Shafizadeh, Jul 01 '17 at 11:28
@u_mulder what function should I use to load a HTML content? — Shafizadeh, Jul 01 '17 at 11:30
Second, `@class='user_box'` finds items where class is `user_box`. It __will__ skip items with several classes. — u_mulder, Jul 01 '17 at 11:32
@u_mulder Ok, I found [`loadHTML`](http://php.net/manual/de/domdocument.loadhtml.php). Thank you. And for your second note, can I use `@id='users_search'` ? — Shafizadeh, Jul 01 '17 at 11:34
https://stackoverflow.com/questions/10551717/xpath-get-html-element-if-its-class-contains-some-text https://stackoverflow.com/questions/1390568/how-can-i-match-on-an-attribute-that-contains-a-certain-string — u_mulder, Jul 01 '17 at 11:35

score 1 · Accepted Answer · edited Jun 20 '20 at 09:12

Try this, Hope this will be helpful. There are few mistakes in your code.

1. You should search like this '//ul[@class="user_box clearfix"]/li' because class="user_box clearfix" class attribute of that HTML source contains two classes.

2. You should use loadHTMLinstead of loadHTMLFile.

<?php
ini_set('display_errors', 1);

libxml_use_internal_errors(true);
$res = file_get_contents("http://www.lenzor.com/photo/search/index/type/user/%D8%B9%D9%84%DB%8C//text/%D9%81%D8%A7%D8%B7%D9%85%D9%87");

$doc = new \DOMDocument();
$doc->loadHTML($res);
$xpath = new \DOMXpath($doc);
$links = $xpath->query('//ul[@class="user_box clearfix"]/li');
$result = array();
if (!is_null($links)) {
    foreach ($links as $link) {
        $href = $link->getAttribute('class');
        $result[] = [$href];
    }
}

print_r($result);

Why the query doesn't match the DOM?

1 Answers1