array_keys

PHP 4, PHP 5, PHP 7, PHP 8
array_keys - Return all the keys or a subset of the keys of an array

Example #1 array_keys example

Result: Array ( [0] => 0 [1] => color ) Array ( [0] => 0 [1] => 3 [2] => 4 ) Array ( [0] => color [1] => size )
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Example #2 of array_keys

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