Some links fail even though they are accessible
<!DOCTYPE html>
    <html lang="en">
    <?php
            require('simple_html_dom.php');
            include('connect.php');
            ini_set('error_reporting', E_ALL);
            ini_set('display_errors', 1);
            $query = mysqli_query($con,"SELECT * FROM link2");
    ?>
     <table id="keywords" cellspacing="0" cellpadding="0">
     <thead>
          <tr>
                    <th class="text-left">NAME</th>
                    <th class="text-left">NAS IP</th>
                    <th class="text-left">MAX IN</th>
                    <th class="text-left">MAX OUT</th>
                    <th class="text-left">STATUS</th>
                    <th id="nm">BEEP</th>
          </tr>
         </thead>
        <tbody  class="table-hover">
    <?php   
Here I am looping through the urls from the db and checking for connection. Settings of my php.ini file seem to be working correctly
while($row = mysqli_fetch_array($query))
{
    $name = $row['name'];
    $url = $row['links'];
    $html = @file_get_contents($url);
if ($html)
{
    $state = "ACCESS";
    $html = file_get_html($row['links']);                           
    $in = $html->find('p', 0)->children(0);
    $trial = explode(";",$in);
    $in = (strip_tags($trial[0]));
    $out = $html->find('p', 0)->children(2);
    $trial2 = explode(";",$out);
    $out = (strip_tags($trial2[0]));
    $str = $in;
    preg_match_all('!\d+(?:\.\d+)?!', $str, $matches);
    $floats = array_map('floatval', $matches);
    $int = (float)$matches[0][0];
    $str2 = $out;
    preg_match_all('!\d+(?:\.\d+)?!', $str2, $matches);
    $floats = array_map('floatval', $matches);
    $int2 = (float)$matches[0][0];
    if($int < $row['min'] || $int2 < $row['max'])
    {
        $display = "BEEP";
    }   
else{
        $display = " ";
    }   
Displaying the table
echo "".$row['name']."".$row['nas_ip']."".$in."".$out."".$state."".$display.""; } else { $state = "NO ACCESS"; $display = "BEEP";
        echo "<tr><td>".$row['name']."</td><td>".$row['nas_ip']."</td><td></td><td></td><td>".$state."</td><td>".$display."</td></tr>";
    }   
    unset($html);
}   
?>
</tbody>
</table>
</body>
</html>
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