DOMDocument从数据库

Question

<?php
ini_set('display_errors', 1);
error_reporting(E_ALL);
require_once ('../includes/connect.php');
try {
    $filter = $db->query("SELECT * FROM procesory");
    $check = $filter->rowCount();
    echo $check.'<br />';
    while($c = $filter->fetch()){
        //print_r($c[21].'<br/>');
        $source = file_get_contents($c['pURLMorele']);
        $doc = new DomDocument();
        $file = @$doc->loadHTML($source);
        $rows = $doc->getElementsByTagName('span');

        foreach ($rows as $row) {
            if($row->getAttribute('class') == 'price') {
                echo $c['ID'].' - ';
                echo $row->nodeValue.' -- OK!<br />';
            }
        }
    }
}
catch (PDOException $e) {
    echo 'Something went wrong!<br>'.$e->getMessage();
    die();
}
?>

你好:)我需要从每个记录中获取数据库＆＃34; pURLMorele＆＃34;列，然后从SPAN与类＆＃34; price＆＃34;之间的URL文本中提取，但现在它只能从ID 2到4工作，它会跳过第一条记录。那是为什么？