在PHP中循环或循环分配

Question

I have a Customers and Employees table:

Customers
    .account_no
    .zipcode
-----------------------
account_no  |  zipcode
-----------------------
1111000100  |  12345
1222000100  |  25678
1333000100  |  47890
1444000100  |  50000
1555000100  |  53456
1666000100  |  63987

---

Employees
    .id_e
    .zipcode_a
    .zipcode_b
    .card_id
---------------------------------------------
id_e  |  zipcode_a  |  zipcode_b  |  card_id
---------------------------------------------
1     |   10000     |   64000     |  1011
2     |   10000     |   54000     |  1002
3     |   50000     |   64000     |  1003

Let say I have 6 Customers, 3 Employees; query result will be like this:

---------------------------------
account_no  |  zipcode  |   id_e
---------------------------------
1111000100  |    12345  |     2
1111000100  |    12345  |     1
1222000100  |    25678  |     2
1222000100  |    25678  |     1
1333000100  |    47890  |     2
1333000100  |    47890  |     1
1444000100  |    50000  |     2
1444000100  |    50000  |     3
1444000100  |    50000  |     1
1555000100  |    53456  |     2
1555000100  |    53456  |     3
1666000100  |    63987  |     3
1666000100  |    63987  |     1

I would like to assign these customers account to each employees in looping or round robin to look something like this:

---------------------------------
account_no  |  zipcode  |   id_e
---------------------------------
1111000100  |    12345  |     2
1222000100  |    25678  |     1
1333000100  |    47890  |     2
1444000100  |    50000  |     1
1555000100  |    53456  |     3
1666000100  |    63987  |     1

I have been trying using usual looping but the result is random and not desirable.

Any ideas, people?

Answer 1

You can make an array and override the previous key to make it so every zip code just loads the last id_e to have it for example:

if you create an array with $myarray = array(); and in your query when you import the values from your database into your array... I would give you the code for that but I do not see how you are importing it; if you show that I can help you properly format it for this case.

Then this is where you override duplicate cases of zipcodes and only take the last id_e with that same zipcode. foreach($myarray as $zipcode => $id_e){ $myarray[$zipcode] = $id_e; }

Also I assume you currently are but make sure your mysql query includes " ORDER BY id_e" at the end of it.