why is this php code not working? - php

Question

This is the code I am using to scrape specific data from http://www.partyhousedecorations.com
however I keep getting this error (Fatal error: Call to a member function children() on a non-object in C:\wamp\www\webScraping\PartyHouseDecorations.php on line 8 )and I am stuck and can't seem to be able to fix it.
This is my code:
<?php
include_once("simple_html_dom.php");
$serv=$_GET['search'];
$url = 'http://www.partyhousedecorations.com/category-adult-birthday-party-themes'.$serv;
$output = file_get_html($url);
$arrOfStuff = $output->find('div[class=product-grid]', 0)->children();
foreach( $arrOfStuff as $item )
{
echo "Party House Decorations".'<br>';
echo $item->find('div[class=name]', 0)->find('a', 0)->innertext.'<br>';
echo '<img src="http://www.partyhousedecorations.com'.$item->find('div[class=image]', 0)->find('img', 0)->src.'"><br>';
echo str_replace('KWD', 'AED', $item->find('div[class=price]',0)->innertext.'<br>');
}
?>

Answer 1

Looks like $output->find('div[class=product-grid]', 0) doesn't return an object with a method called children(). Maybe it's returning null or something that's not an object. Put it in a separate variable and look what the value of that variable is.
$what_is_this = $output->find('div[class=product-grid]', 0);
var_dump($what_is_this)
Update:
I debugged your program, and apart from the simple html dom parser seemingly expecting classes to be given as 'div.product-grid' instead of 'div[class=x]' it also turns out that the webpage responds by returning a product list instead of a product grid. I've included a working copy below.
<?php
include_once("simple_html_dom.php");
$serv=$_GET['search'];
$url = 'http://www.partyhousedecorations.com/category-adult-birthday-party-themes';
$output = file_get_html($url);
$arrOfStuff = $output->find('div.product-list', 0)->children();
foreach( $arrOfStuff as $item )
{
echo "Party House Decorations".'<br>';
echo $item->find('div.name', 0)->find('a', 0)->innertext.'<br>';
echo '<img src="http://www.partyhousedecorations.com'.$item->find('div.image', 0)->find('img', 0)->src.'"><br>';
echo str_replace('KWD', 'AED', $item->find('div.price',0)->innertext.'<br>');
}
?>