Problems with multiple attributes while using PHP Simple HTML DOM - php

Question

I use this code for getting elements of left navigation bar:
function parseInit($url) {
$ch = curl_init();
$timeout = 0;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
$data = parseInit("https://www.smile-dental.de/index.php");
$data = preg_replace('/<(d[ldt])( |>)/smi', '<div data-type="$1"$2', $data);
$data = preg_replace('/<\/d[ldt]>/smi', '</div>', $data);
$html = new simple_html_dom();
$html = $html->load($data);
But faced with such problem.
For example, if I use such syntax for getting elements: $html->find("div[data-type=dd].level2"), then I get ALL elements with data attributes DT, DD, DL and class name LEVEL2. If I use another syntax: $html->find("div.level2[data-type=dd]"), then I get ALL elements with data attribute DD, but with class names LEVEL1, LEVEL2 and LEVEL3 etc..
Could you explain me what the problem is? Thanks in advance!
P.S.: All DT, DL and DD elements was changed with regexp to the DIV elements with appropriate data attributes, because this parser incorrectly counts the number of these elements.

Answer 1

REGEXes are not made to manipulate HTML, DOM parsers are... And simple_html_dom you're using can do it easily...
The following code will do what you want just fine (check comments):
$data = parseInit("https://www.smile-dental.de/index.php");
// Create a DOM object
$html = new simple_html_dom();
$html = $html->load($data);
// Find all tags to replace
$nodes = $html->find('td, dd, dl');
// Loop through every node and make the wanted changes
foreach ($nodes as $key => $node) {
// Get the original tag's name
$originalTag = $node->tag;
// Replace it with the new tag
$node->tag = 'div';
// Set a new attribute with the original tag's name
$node->{'data-type'} = $originalTag;
}
// Clear DOM variable
$html->clear();
unset($html);
Here's is it in action
Now, for multiple attributes filtering, you can use either of the following methods:
foreach ( $html->find("div.level2") as $key => $node) {
if ( $node->{'data-type'} == 'dt' ) {
# code...
}
}
OR (courtesy to h0tw1r3):
// array containing all the filtered nodes
$dts = array_filter($html->find('div.level2'), function($node){return $node->{'data-type'} == 'dt';});
Please read the MANUAL for more details...