First off, your query looks wrong, I believe it should be
"SELECT admin_name.admin_name, admin_name.admin_lastname, admin_name.admin_creattime,
admin_detail.admin_pass, admin_detail.admin_phone, admin_detail.admin_email, admin_detail.admin_gender
FROM admin_name,admin_detail "
Then to figure out how to access it, write the following line within your while loop
You will either see that you need to reference the column names as $row['admin_name.admin_name'] or you may still be able to use $row['admin_name'] (I think the later will still be accurate).