how to fetch out the index/key from an array using its value in PHP?

Question

how to fetch out the index/key from an array using its value in PHP?

If i have an array say :

array{
        0 => 'Me',
        1 => 'You',
        2 => 'We'
}

then here how to find that value "You" has key "1"? Using any php logic.

Answer 1

array_search does the job I think

Answer 2

$b = get_array_index($a, "YOU"); 
echo $b; //  print '1' 

Answer 3

$array =array{
    0 => 'Me',
    1 => 'You',
    2 => 'We'
}
$searchValue = "YOU"; 
$keys = array_keys($array, $searchValue); 

#test it 
print_r($keys); 

this would work fine.