Fill multidimensional array from other array

Question

I have a multidimensional array $elements where I need to fill it with values from the array $ratings. The array $ratings is built so the first value will fit into the first slot in elements, the next in the second and so on.

$elements
4 => array:3 [▼
  2 => 0
  3 => 0
  4 => 0
]

5 => array:3 [▼
  2 => 0
  3 => 0
  4 => 0
]

7 => array:3 [▼
  2 => 0
  3 => 0
  4 => 0
]

I now need to fill $elements with 9 specific values from

$ratings
array:9 [▼
0 => 3
1 => 2
2 => 1
3 => 3
4 => 3
5 => 2
6 => 3
7 => 2
8 => 1
9 => 3
]

If I manage to loop through $elements, inserting values from $ratings one by one, I will have solved my problem.

So $elements[4][2] should have the value of 3, $elements[4][3] should have value of 2 etc.

Gopal Satpati · Accepted Answer · 2015-06-12 06:14:37Z

1

Also you can manipulate these by array_fill using loop.

answered Jun 12, 2015 at 6:14

Gopal Satpati

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1 Comment

bitoiu Over a year ago

can you add more information, including an example?

someOne · Accepted Answer · 2015-06-12 06:45:47Z

0

Try this:

<?php
$elements = [ 
    4=>[2=>0, 3=>0, 4=>0],
    5=>[2=>0, 3=>0, 4=>0],
    7=>[2=>0, 3=>0, 4=>0],
];

$ratings = [ 0 => 3, 1 => 2, 2 => 1, 3 => 3, 4 => 3, 5 => 2, 6 => 3, 7 => 2, 8 => 1, 9 => 3 ];

$ratingsIndex = 0;
foreach(array_keys($elements) as $ElementsIndex) {
    foreach(array_keys($elements[$ElementsIndex]) as $ElementsSubIndex) {
        $elements[$ElementsIndex][$ElementsSubIndex] = $ratings[$ratingsIndex++];
    }
}

echo "<pre>";
print_r($elements);
echo "</pre>";
?>

edited Jun 12, 2015 at 6:45

answered Jun 12, 2015 at 6:16

someOne

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1 Comment

Bergkamp10 Over a year ago

Thanks, but how would you do this if the keys for the $elements array can different each time? As a more dynamic solution

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