@param string $key

@return bool
186531
public function getConfigVariable(string $key)
    {
        if ($key === '' || $key === null) {
            return null;
        }

        if (!isset($this->setting[$key])) {
            return null;
        }

        return $this->setting[$key];
    }
402242
public function has(string $key = null) : bool
    {
        if ($key === null) {
            return false;
        }

        return $this->offsetExists($key);
    }
635966
public function has($key)
    {
        return isset($this->data[$key]) && is_array($this->data[$key]);
    }
262002
public function has($key)
    {
        $key = strval($key);
        $key = $this->getSlugFromName($key);

        return (!empty($key) && in_array($key, $this->items));
    }
266238
public function exists(?string $key = null) : bool
    {
        $key = $this->constructKey($key);

        return $this->parseKey($key, function ($part, $result) {
            return array_key_exists($part, $result);
        });
    }
400689
public function has(string $key): bool
    {
        return array_key_exists(strtolower($key), $this->keyMap) &&
            array_key_exists($this->keyMap[strtolower($key)], $this->collection);
    }
1014555
public function hasByKey($key) {
		$nullValue = ClassHelper::createObject(NullValue::class);
		$value = $this->getByKey($key, $nullValue);
		if($value instanceof NullValue) {
			return false;
		}
		return true;
	}
503409
public function hasObject(string $key)
    {
        if (isset($this->definitions['instance'][$key])) {
            return true;
        }

        if (isset($this->aliases[$key])) {
            return isset($this->definitions['instance'][$this->aliases[$key]]);
        }

        return false;
    }
1340530
public function has($key)
	{
		if (count(func_get_args()) > 1)
		{
			foreach (func_get_args() as $value)
			{
				if ( ! $this->has($value)) return false;
			}

			return true;
		}

		if (is_bool($this->input($key)) || is_array($this->input($key)))
		{
			return true;
		}

		return trim((string) $this->input($key)) !== '';
	}
346821
public static function has(string $key) : bool
  {
    $expect = explode('.', $key);
    $config = Config::all();

    foreach($expect as $setting) {
      if (!isset($config[$setting])) return false;
      $config = $config[$setting];
    }

    return true;
  }
375673
public function has($key): bool
    {
        return $this->exists($key) && null !== $this->attributes[$key];
    }
757897
public function has( $key )
	{
		$key	= !$this->caseSensitive ? strtolower( $key ) : $key;								//  lowercase key if dictionary is not case sensitive
		return array_key_exists( $key, $this->pairs );
	}
170730
public static function has( $key )
	{
		$cache = self::instance();
		if ( $cache ) {
			return $cache->isExisting( $key );
		}
		return false;
	}
441548
public function has(string $key): bool
    {
        if (!array_key_exists($key, $this->data)) {
            return false;
        }

        return true;
    }
1290104
public function hasStored(string $key)
    {
        if (isset($this->store[$key])) {
            return true;
        }

        if (isset($this->aliases[$key])) {
            return isset($this->store[$this->aliases[$key]]);
        }

        return false;
    }
1105983
public function has(string $key) : bool
    {
        return isset($this->collection[$this->useKey($key)]);
    }
863025
public function has($key): bool
    {
        $key = $this->getKeyword($key)->getSlug();

        return ! empty($key) && \in_array($key, $this->items);
    }