$user=array('Moe','Larry','Curly'); 
$user=serialize($stooges); 
echo '<pre>'; 
print_r($user); 
echo '<br />'; 
print_r(unserialize($user)); 

a:3:{i:0;s:3:"Moe";i:1;s:5:"Larry";i:2;s:5:"Curly";}
Array ( [0] => Moe [1] => Larry [2] => Curly )

$user=array('Moe','Larry','Curly'); 
$user=base64_encode(serialize($user)); 
$user=unserialize(base64_decode($user)); 

function my_serialize($obj_array){ 
  return base64_encode(gzcompress(serialize($obj_array))); 
} 
//反序列化 
function my_unserialize($str){ 
  return unserialize(gzuncompress(base64_decode($str))); 
}