How to add values to an array ?

Question

1.00/5 (1 vote)

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Here's the situation:

I have 2 arrays:

PHP

Array(
    [0] => Person1
    [1] => Person1
    [2] => Person3
)

PHP

Array(
    [0] => 100.00
    [1] => 150.25
    [2] => 157.15
)

Now, my question is: How do I add array values from the second array, as they belong to Person 1 in the first array ? It should output like this:

PHP

Array(
    [0] => 250.25 // for Person1 in the first array
    [1] => 157.15 // for Person2 in the first array
)

I am not finding any solution for it.. Kindly help me out. Please.

Posted 18-Jan-15 23:39pm

Mehul Bawadia

Updated 18-Jan-15 23:45pm

Joezer BH

v2

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Comments

Joezer BH 19-Jan-15 5:49am

How do you know which elements in the second array are relating to a specific person?

Mehul Bawadia 19-Jan-15 6:02am

It is because, I have set them in that order only.

Sinisa Hajnal 19-Jan-15 6:03am

As-is, you cannot. Since you don't know which element belongs to which person. See the solution.

2 solutions

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Peter Leow · Answer 1 · 2015-01-19T01:48:00

It cannot work this way. As it is, there is no relationship between the arrays. Instead, you should use associative array[^], which is a type of array consisting of name-value pairs. see example:

PHP

<?php
$first = array("Person1"=>"250.25", "Person2"=>"157.15");
$second = array("Person1"=>"100.00");

    foreach($first as $key1 => $value1) {
            foreach($second as $key2 => $value2) {
               $third[$key1] = $value1;
               if ($key1 == $key2){
                    $third[$key1] +=  $value2;
                    break;
               }
           }
    }

    foreach($third as $key3 => $value3) {
            echo $key3."=".$value3;
            echo "<br>";
    }
?>

Sinisa Hajnal · Answer 2 · 2015-01-19T00:08:00

The solution would be to have this number array in person class.
(this is VB.NET, you have find the equivalent write-up for PHP)
Class Person
Public Property Name as String
Public Property Values() as Integer
End Class

Second solution would be: change second array into hashtable or dictionary with keys Person1, 2...and values from your second array. That way you can add/remove from the person as you wish.

Here is PHP primer[^]

How to add values to an array ?

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How to add values to an array ?

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