array_key_exists

Supported Versions: PHP 4 >= 4.0.7, PHP 5, PHP 7, PHP 8
Checks if the given key or index exists in the array
Alias key_exists
array_key_exists(string|int $key, array $array): bool
    protected function correctHeadersSetIncorrectlyByPhpDevServer(array $headers): array

    {

        if (
array_key_exists('HTTP_CONTENT_LENGTH'$headers)) {

            
$headers['CONTENT_LENGTH'] = $headers['HTTP_CONTENT_LENGTH'];

        }
            $headers['CONTENT_LENGTH'] = $headers['HTTP_CONTENT_LENGTH'];

        }



        if (
array_key_exists('HTTP_CONTENT_TYPE'$headers)) {

            
$headers['CONTENT_TYPE'] = $headers['HTTP_CONTENT_TYPE'];

        }
    protected function getReasonFromStatusCode(int $code): ?string

    
{

        if (
array_key_exists($codeself::STATUS_CODE_REASONS)) {

            return 
self::STATUS_CODE_REASONS[$code];

        }