包含不必要的大括号的json格式需要删除，从而产生额外的空数组

Question

0:{}    
city    239
state   7
value   Greater Noida
1:{}    
city    484
state   7
value   Noida

This is my output when I am encoding my JSON but I only want this:

using php and jquery

0:  
city    239
state   7
value   Greater Noida
1:  
city    484
state   7
value   Noida