Something

section[0]['sec_id']="2";
section[1]['sec_id']="3";

cat[2][0]['cat_id']="1"
cat[2][0]['cat_name']="category1"

cat[2][1]['cat_id']="2"
cat[2][1]['cat_name']="category2"

cat[3][0]['cat_id']="3"
cat[3][0]['cat_name']="category3"

cat[3][1]['cat_id']="4"
cat[3][1]['cat_name']="category4"

//i  want to  make a table that display a section and the category belongs to it [ by the first index = the sec_id ] after it ..