It is a string length indeed. Thanks a lot!
If I add images to the gallery field via admin panel (not directly to db), this parameter equals to “2” or “3” or “4” but why precisely?
Actually, in the first message I wrote that I’m using serialized array a:4:{i:0;s:4:”1174″;i:1;s:4:”1175″;i:2;s:4:”1176″;i:3;s:4:”1177″;}
What I need is to understand what “s” parameter means! How can I determine its value?