var_dump not printing the integer values

I am trying to read some values from the membase. I observer that when there is any integer the following command is not working.

 var_dump($memcache->get("keyset123"));
 print_r($me开发者_运维问答mcache->get("keyset123"));

If the get result is a string the above command prints. If the get result is a Integer the above commands are printing none.

vardump prints =string(0) "" print_r prints none.

can you please tell me what is the issue

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That is because the $memcache->get() call is returning a string value. Your problem lies elsewhere (likely deeper within the code in use), not within var_dump().

Look into what you're storing within whatever is inside of the variable $memcache.

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var_dump($memcache->get("keyset123"));
//outputs
//string(0) ""

Memcached is storing an empty string at the key "keyset123", otherwise you would be getting FALSE (key doesn't exist) or NULL (key exists, but no value exists)