php - Split a string using preg_split

Question

Im looking for a way to split the following string after each set of numbers using regex. I am fairly new to this and Im having a hard time understanding how to use the correct regex format.

$string = '521158525 Interest Being Subordinated: 521855248 Benefiting Interest: 511589923';

preg_split("/([0-9])/", $string, 0, PREG_SPLIT_NO_EMPTY);

question from:https://stackoverflow.com/questions/65888008/split-a-string-using-preg-split

Answer 1

To split after each set of numbers, you might use a pattern to match only digits between word boundaries.

Then use K to forget what is matched until so far follwed by matching optional horizontal whitespace chars to not get trailing whitespaces after the split.

$string = '521158525 Interest Being Subordinated: 521855248 Benefiting Interest: 511589923';
$result = preg_split(
    "d+h*K",
    $string,
    0,
    PREG_SPLIT_NO_EMPTY
);

print_r($result);

Output

Array
(
    [0] => 521158525
    [1] => Interest Being Subordinated: 521855248
    [2] => Benefiting Interest: 511589923
)