搜索数组以查找关键的PHP

Question

function returnStatus($status)
{
    $supportStatus = [
        0 => 'open',
        1 =>'half closed',
        9 => 'closed',
    ];

    $key = array_search($status, $supportStatus);
    return $supportStatus[$key];
}

My script returns 0 (open), even if I sent 9 as int to the function.

Answer 1

What you are looking for is the array_key_exists()

function returnStatus($status){

    $supportStatus = [
        0 => 'open',
        1 =>'half closed',
        9 => 'closed',
    ];

    $key = array_key_exists($status, $supportStatus);
    return $supportStatus[$key];
}

Furthermore you donot even need to do that jugglery, if eventually you are interested in the value stored in that key's location.

I'd just do it in one line as below..

echo isset($supportStatus[$status]) ? $supportStatus[$status]: false;

or with assignment operator

$output = isset($supportStatus[$status]) ? $supportStatus[$status]: '';

Answer 2

I hope this is what you're looking for,

function searchColor($color){
    $array = array(0 => 'blue', 1 => 'red', 2 => 'green', 3 => 'red');
    $key = array_search($color, $array); 
    return $array[$key];    
}
echo searchColor('blue');

Update your code and see if it works, here is the reference .