Wordpress Version check with PHP

I've made a little script that checks for last wordpress version of a site, for some its ok if the website shows the info about version, but there is a problem where if there are more name="generator" it gets the last line.

Any ideas guys? Thanks.

?php 

    function file_get_contents_curl($url)
    {
        $ch = curl_init();

        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

        $data = curl_exec($ch);
        curl_close($ch);

        return $data;
    }

    $link = mysqli_connect("localhost", "", "", "");    

    if($link === false) { die('No connection!' . mysqli_connect_error()); }

    $sql = "SELECT * FROM My_Websites ORDER BY date";

    if($result = mysqli_query($link, $sql)) {

        if(mysqli_num_rows($result)  0) {

            echo 'table class="table table-striped table-hover"';        
            echo 'thead'; 
            echo "tr";
            echo "thID/th";
            echo "thAdaugat/th";
            echo "thDomeniu/th";
            echo "thVersiune WP./th";
            echo "thAdmin/th";
            echo "/tr";
            echo "/thead";

            while($row = mysqli_fetch_array($result)){   

                $domeniu = $row['website'];
                $html = file_get_contents_curl($domeniu);

                //parsing begins here:
                $doc = new DOMDocument();
                @$doc-loadHTML($html);
                $nodes = $doc-getElementsByTagName('title');

                //get and display what you need:
                $title = $nodes-item(0)-nodeValue;

                $metas = $doc-getElementsByTagName('meta');

                for ($i = 0; $i  $metas-length; $i++)
                {
                    $meta = $metas-item($i);
                    if($meta-getAttribute('name') == 'description')
                        $description = $meta-getAttribute('content');
                    if($meta-getAttribute('name') == 'generator')
                        $generator = $meta-getAttribute('content');
                }

                echo "tr";
                echo "td " . $row['id'] . " /td";
                echo "td " . $row['date'] . " /td";
                echo 'td a href="http://' . $domeniu . '" target="_blank"' . $domeniu . '/a/td';
                echo "td " . $generator . " /td";
                echo 'td a href="http://' . $domeniu . '/wp-admin" type="button" class="btn btn-default btn-sm" span class="glyphicon glyphicon-link" style="color:blue;"/span acceseaza /a/td';
                echo "/tr";

            }     

            echo "/table";      
            mysqli_free_result($result);    

        } else { print ('Error!'); }    

    } else { print 'Error!' . mysqli_error($link); print '.'; }

    mysqli_close($link);

?