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Any more information on what's going on here and would it be faster with a bigger or smaller array.

Fi Horan
– Fi Horan

2016-08-31 10:49:15 +00:00
Commented Aug 31, 2016 at 10:49
The double flip is going to remove duplicated values, because a key can't exist twice, otherwise it gets overwritten. If any value is duplicated and the array is flipped, the last occurrence (I assume) will be the value for the key.

Goldentoa11
– Goldentoa11

2017-01-18 13:42:57 +00:00
Commented Jan 18, 2017 at 13:42
In PHP 7 I've noticed flipping a multidimensional array more than once may reorder array elements unexpectedly.

vhs
– vhs

2017-05-31 02:32:53 +00:00
Commented May 31, 2017 at 2:32
1

Calling array_flip() is not stable/reliable for general use. Values that coalesce to the same string or integer value will be consolidated/lost despite not being identical. Also, since PHP4.3 (maybe earlier, I don't know), this solution will emit Warnings when values are not strings or integers. Proof

mickmackusa
– mickmackusa ♦

2023-05-20 22:31:08 +00:00
Commented May 20, 2023 at 22:31

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