Write a function, persistence, that takes in a positive parameter num and returns its multiplicative persistence, which is the number of times you must multiply the digits in num until you reach a single digit.
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For example:
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persistence(39) === 3; // because 3 * 9 = 27, 2 * 7 = 14, 1 * 4 = 4 and 4 has only one digit
It seems like $numArray can also be of type true; however, parameter $value of count() does only seem to accept Countable|array, maybe add an additional type check?
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Ignorable by Annotation
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If this is a false-positive, you can also ignore this issue in your code via the ignore-type annotation
It seems like str_split($num) can also be of type true; however, parameter $array of array_product() does only seem to accept array, maybe add an additional type check?
(
Ignorable by Annotation
)
If this is a false-positive, you can also ignore this issue in your code via the ignore-type annotation
w3bdesign /
Codewars-PHP
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