19

What would be the most simple way to convert an integer to an array of numbers?

Example:

2468 should result in array(2,4,6,8).

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4 Answers 4

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56

You can use str_split and intval:

$number = 2468;

    $array  = array_map('intval', str_split($number));

var_dump($array);

Which will give the following output:

array(4) {
  [0] => int(2)
  [1] => int(4)
  [2] => int(6)
  [3] => int(8)
}

Demo

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2 Comments

Ya. Just convert the int value to a string and split it.
str_split does convert to string already. However the output wasn't an array of integers,, so this needed actually some conversion.
8

use str_split() function

$array = str_split($str);

http://php.net/manual/en/function.str-split.php

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Comments

7

You can cut-off the last digit by taking the number modulo 10.

Don't tell it to anyone! 

do 
{
    $array.add(num % 10);
    num = num / 10;
}
while (num != 0);
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1 Comment

Wait, wha...? Don't tell it to anyone? Why?
0

Example #2 Splitting a string into component characters

$str = 'string';
$chars = preg_split('//', $str, -1, PREG_SPLIT_NO_EMPTY);
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1 Comment

str_split() from the other answeres would perform much better (i'll guess).

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