CODEWITHSUNDEEP
phparrayssplit
Alex
Alex

Reputation: 10216

How to split a string into an array, but rather chain new elements instead of adding an element per delimiter in php?

I know how to do that with a loop obviously, but I wonder if there was a one line for turning this:

a/b/c/d

into

[a, a/b, a/b/c, a/b/c/d]

Upvotes: 1

Views: 88

Answers (2)

acobster
acobster

Reputation: 1657

Not a one-liner exactly, but you can do this with array_reduce:

$arr = array_reduce(explode('/', 'a/b/c/d'), function($accumulator, $char) {
    $prev = empty($accumulator) ? '' : $accumulator[count($accumulator)-1] . '/';
    $accumulator[] = $prev.$char;
    return $accumulator;
}, []);

Upvotes: 3

Jeff Puckett
Jeff Puckett

Reputation: 40861

has a semi-colon in the closure, so I guess it's technically a two-liner

echo json_encode(array_map(function($val,&$accumulator){return $accumulator=$accumulator.$val; },explode('/','a/b/c/d'),array()));

Results in this:

["a","ab","abc","abcd"]

Upvotes: 0

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