php DOMDocument find class extract id value

Question

i have this html from stagram :

<div id="photo351321902758808423_176859145" class="photoeach">
    <div class="photoeachinner">
        <div class="left">
            <div class="photowrapper">
                <div class="infomation_box clearfix">
                    <div class="profimage_small">

<div id="photo351295515670923844_176859145" class="photoeach">
    <div class="photoeachinner">
        <div class="left">
            <div class="photowrapper">
                <div class="infomation_box clearfix">

i need find class photoeach and extract id 352034826703915686_176859145

i did with regex but no luck , so im trying do it with domdocument

i followed step from Getting DOM elements by classname

$dom = new DomDocument();
$dom->load($filePath);
$finder = new DomXPath($dom);
$classname="photoeach";
$nodes = $finder->query("//*[contains(@class, '$classname')]");

but i cant firgure it out how i can extract ID

So you want to extract an `id` that isn't present in the document? — lonesomeday, Dec 23 '12 at 12:13
"so im trying do it with domdocument" So... what have you tried? — PeeHaa, Dec 23 '12 at 12:19
i tried this http://stackoverflow.com/questions/6366351/getting-dom-elements-by-class-name there is no refrence for getting id — madman, Dec 23 '12 at 12:28
You just need to iterate over `$nodes` (which you can do with `foreach`) and `getAttribute('id')` - you are 99% of the way there! — DaveRandom, Dec 23 '12 at 13:17

score 4 · Accepted Answer · answered Dec 26 '12 at 03:28

As Dave already mentioned you are not really that far off:

$dom = new DomDocument();
$dom->load($filePath);
$finder = new DomXPath($dom);
$classname="photoeach";
$nodes = $finder->query("//*[@class = '$classname']");

foreach ($nodes as $node) {
    echo 'Id: ' , substr($node->getAttribute('id'), 5) , '<br>';
}

Demo: http://codepad.viper-7.com/xEdYLr

Note that I have changed the contains selector of the class to only match exact matches, otherwise the photoeachinner would also be matched. If this is not what you want you can easily revert that change.

php DOMDocument find class extract id value

1 Answers1