Text string to array

[jonnyenglish89]

Hey guys

how can i use php to turn a string like this:

 

“A, B#2, C#2, D#3, E”

 

Into an array like this:

 

Array

(

[1] => A

[2] => B

[3] => B

[4] => C

[5] => C

[6] => D

[7] => D

[8] => D

[9]=> E

)

 

I can get the letter and count into an array like this with the help of regex:

Array

(

[A] => 1

=> 2

 [C] => 2

 [D] => 3

 [D]=> 1

)

But I have no idea how I would get the result I desire – any help with this part would be greatly appreciated

[requinix]

Set up a new empty array to hold the final result. Do a foreach on your regex array, then do a for loop according to each letter's count. Inside the for loop, add the letter to the final result array.

[Barand]

or awhile loop instead of a for loop

$input = [ 'A' => 1,
           'B' => 2,
           'C' => 2,
           'D' => 3,
           'E' => 1  ];
           
$output = [];

foreach ($input as $k => $n) {
    while ($n--) $output[] = $k;
}

[benanamen]

Where and how does your string come from in the first place. I smell an XY Problem.

[ginerjm]

I agree with Benanamen - Seems like a rather silly goal to get an array like the one the OP describes.

[Psycho]

Another way:

 

foreach ($input as $k => $n) {
    $output = array_merge($output, array_fill(0, $n, $k));
}