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# Create an array which is based on a given value

Go to solution Solved by Barand,

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Hi,

My expectation is to get an array which is based on a given value.

In my POS system, I do have an array  that shows all the baskets that still have an outstanding balance to be due by the customer for each basket.

The array looks like this:

Array
(
[15] => 1088.00
[13] => 2206.00
[11] => 1716.00
[9] => 1210.00
[7] => 140.00
)

key = basket_id
value = balance due

The customer can take the sum of the amount due and make payments in one lump sum or in installments without paying separately for each baskets.

My question is, Depending on the amount the customer pays, I need to create a new array.

Suppose the amount paid by the customer is 5000, then the new array should be as follows.

Array
(
[15] => 1088.00
[13] => 2206.00
[11] => 1706.00
)

In this newly created array, array_sum() should be equal to the amount paid by customer. (According to this particular example it should be 5000)

Can I know the better workaround for this?

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What are you doing with the payments?  IF the user paid 5000 why is the array still equal to 5000?  Shouldn't it be the remainder of the 5000? I don't understand why you want this array to be created.

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That seems counter-intuitive to me. Startting with your original array, I would expect the remaining array, after customer pays 5000, to be

15 => 1088
13 => 272

where the 5000 clears the balance from the three oldest basket amounts (7, 9, 11) and leaves 272 due on basket 13

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12 minutes ago, Barand said:

where the 5000 clears the balance from the three oldest basket amounts (7, 9, 11)

Thanks for mentioned it.

new array should be in this order.

Array
(
[13] => 1934.00
[11] => 1716.00
[9] => 1210.00
[7] => 140.00
)

The amout should be clear the balance from oldest baskets

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• Solution

Ah! Two arrays

\$amts_due = [   '15' => 1088.00,
'13' => 2206.00,
'11' => 1716.00,
'9' => 1210.00,
'7' => 140.00
];
\$amts_paid = [];

\$payment = 5000.00;

ksort(\$amts_due);       // oldest first

foreach (\$amts_due as \$bid => &\$due)  {
if (\$payment >= \$due) {
\$payment -= \$due;
\$amts_paid[\$bid] = \$due;
\$due = 0;
}
else {
\$due -= \$payment;
\$amts_paid[\$bid] = \$payment;
\$payment = 0;
}
}
\$amts_due = array_filter(\$amts_due);
\$amts_paid = array_filter(\$amts_paid);

Giving

Due Array
(
[13] => 272
[15] => 1088
)
Paid Array
(
[7] => 140
[9] => 1210
[11] => 1716
[13] => 1934
)

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18 hours ago, Barand said:

Ah! Two arrays

\$amts_due = [   '15' => 1088.00,
'13' => 2206.00,
'11' => 1716.00,
'9' => 1210.00,
'7' => 140.00
];
\$amts_paid = [];

\$payment = 5000.00;

ksort(\$amts_due);       // oldest first

foreach (\$amts_due as \$bid => &\$due)  {
if (\$payment >= \$due) {
\$payment -= \$due;
\$amts_paid[\$bid] = \$due;
\$due = 0;
}
else {
\$due -= \$payment;
\$amts_paid[\$bid] = \$payment;
\$payment = 0;
}
}
\$amts_due = array_filter(\$amts_due);
\$amts_paid = array_filter(\$amts_paid);

Giving

Due Array
(
[13] => 272
[15] => 1088
)
Paid Array
(
[7] => 140
[9] => 1210
[11] => 1716
[13] => 1934
)

Thank you so much... Its sloved my problem.

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