I have a div which can be hidden or not, depending on the user. That div has an attribute called 'attrLoc'. What I would like is to be abble to retrieve that attribute value from php. Hope someone can help. Thank you in advance for your replies. Cheers. Marc.
My HTML:
<div id="btn-loc" class="hidden" attrLoc="1">
...
</div>
XPath is quite the standard for querying XML structures.
However, note that if you want to parse HTML from an untrusted source, that is a source where HTML is not absolutely well formed, you should prefer DOMDocument::loadHTML() to SimpleXML variants, in particular simplexml_load_string.
For Example
<?php
$html = '
<div id="btn-loc" class="hidden" attrLoc="1">
...
</div>';
$doc = DOMDocument::loadHTML($html);
$xpath = new DOMXPath($doc);
$query = "//div[@id='btn-loc']";
$entries = $xpath->query($query);
foreach ($entries as $entry) {
echo "Found: " . $entry->getAttribute("attrloc");
}
Hope it helps!
You can also use Document Object Model
<?php
$str = '<div id="btn-loc" class="hidden" attrLoc="1">
text
</div>';
$doc = new DOMDocument();
$d=$doc->loadHtml($str);
$a = $doc->getElementById('btn-loc');
var_dump($a->getAttribute('attrloc'));
id attribute but XPath is much more versatile, imho. Desperately waiting for a getElementBySelector() from PHP team...
Using jQuery in JavaScript
var state = $('#btn-loc').attr('attrLoc');
Then you can send the value to PHP
EDIT:
If you are working with an HTML page/DOM in PHP you can use SimpleXML to traverse the DOM and pull your attributes that way
$xml = simplexml_load_string(
'<div id="btn-loc" class="hidden" attrLoc="1">
...
</div>'
);
foreach (current($xml->xpath('/*/div'))->attributes() as $k => $v)
{
var_dump($k,' : ',$v,'<br />');
}
You will see the name and the value of the attributes dumped
id : btn-loc
class : hidden
attrLoc : 1
simplexml_load_string is not reliable if the HTML source is not well formed, from an XML perspective. You should use DOMDocument::loadHTML() as I suggested. CheersHow about this
$str = '<div id="btn-loc" class="hidden" attrLoc="1">';
$pattern = '/<div id="btn-loc".*\sattrLoc="([0-9])">/';
preg_match($pattern, $str, $matches);
var_dump($matches);
Outputs
array
0 => string '<div id="btn-loc" class="hidden" attrLoc="1">' (length=45)
1 => string '1' (length=1)
to do this with php use simple html dom parser. has a bit of learning curve, but kind of useful
