title: serialize a large array in PHP?
body: <p>I am curious, is there a size limit on serialize in PHP. Would it be possible to serialize an array with 5,000 keys and values so it can be stored into a cache?</p>
  
  <p>I am hoping to cache a users friend list on a social network site, the cache will need to be updated fairly often but it will need to be read almost every page load.</p>
  
  <p>On a single server setup I am assuming APC would be better then memcache for this.</p>