Using DOM to get HTML code. - php

Question

I am collecting username, title, video count and comment count from html source. Consider this link
Here is my code to get it:
function getParameter($url)
{
$html = file_get_html($url);
if($html)
{
$containers1 = $html->find('div.v div.v-link v-meta-entry');
foreach($containers1 as $container)
{
$plays = $container->find('v-num'); // get nos of time video played
$item = new stdClass();
foreach($plays as $play)
{
$nos = $play->plaintext;
}
//echo $address;
}
$containers2 = $html->find('div.v div.v-link v-meta va a'); //get user name
foreach($containers2 as $username)
{
$user = $username->plaintext;
}
$containers3 = $html->find('div.v div.v-link a'); //get video title
foreach($containers3 as $title)
{
$title = $title->plaintext;
}
$commentcontainers = $html->find('div.ico-statcomment span'); //get nos of comments
foreach($commentcontainer as $cont)
{
$comments = $cont->plaintext;
}
return $data;
}
}
But it gives this error:
Warning: Invalid argument supplied for foreach() in /var/www/html/scrap/yelp/yoku.php on line 41
any hints for this?
Here is the source code snippet:
<div class="v" >
<div class="v-thumb">
<img src="http://r1.ykimg.com/0515000052B7B3D46714C0318106EA36" alt="和小姚晨约会激动抽筋" />
<div class="v-thumb-tagrb"><span class="v-time">08:56</span></div>
</div>
<div class="v-link">
</div>
<div class="v-meta va">
<div class="v-meta-neck">
<a class="v-useravatar" href="http://i.youku.com/u/UMTQxNDg3NzA4" target="_blank"><img title="嘻哈四重奏" src="http://g3.ykimg.com/0130391F455211D40E180C021BBB97D37C4057-26F4-2F53-A8CD-4A4139415701"></a>
<span class="v-status"> </span>
<a class="v-username" href="http://i.youku.com/u/UMTQxNDg3NzA4" target="_blank">嘻哈四重奏</a>
</div>
<div class="v-meta-title">和小姚晨约会激动抽筋</div>
<div class="v-meta-entry">
<i class="ico-statplay" title="播放"></i><span class="v-num">588万</span> <i title="评论" class="ico-statcomment"></i><span class="v-num">1,290</span> </div>
<div class="v-meta-overlay"></div>
</div>
</div>

Answer 1

Check selectors, documentation here simplehtmldom. For example, I did some changes in selectors.
function getParameter($url)
{
$html = file_get_html($url);
if($html)
{
//we iterate all 'div.v' and select data from every 'div.v' separately
$containersDiv = $html->find('div.v');
foreach($containersDiv as $div)
{
$containers1 = $div->find('div[class=v-meta va] div.v-meta-entry');
foreach($containers1 as $container)
{
$plays = $container->find('.v-num'); // get nos of time video played
$item = new stdClass();
foreach($plays as $play)
{
$nos = $play->plaintext;
}
//echo $address;
}
$containers2 = $div->find('div[class=v-meta va] a'); //get user name
foreach($containers2 as $username)
{
$user = $username->plaintext;
}
$containers3 = $div->find('div.v-link a'); //get video title
foreach($containers3 as $title)
{
$title = $title->plaintext;
}
$commentcontainers = $div->find('div[class=v-meta va] div.v-meta-entry span'); //get nos of comments changed
foreach($commentcontainer as $cont)
{
$comments = $cont->plaintext;
}
}
return $data;
}
}