Segmentation fault #341

<?php
try { 
 $oRedis = new Redis();
 $oRedis->connect('127.0.0.1', 6379, 1);

 if(!empty($_GET['ig'])) {  
  $oRedis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_IGBINARY);
 }
 elseif(!empty($_GET['php'])) {  
  $oRedis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP);
 }

 if(!$oRedis->ping()) {  
  throw new Exception('Connection lost');
 }

 $sKey = !empty($_GET['key']) ? $_GET['key'] : 'very_long_namespace:very_long_name'; 
 $oRedis->incr($sKey);

 $iValue = $oRedis->get($sKey); 
 echo "{$sKey} => {$iValue}";
}
catch(Exception $oException) { 
 echo $oException->getMessage();
}