src/Psr16Manager.php
public function get(string $key, $default = null)
    {
        $value = static::$handler->get($this->normalized($key));
        // If we could not find the cache value, we will get
        // the default value for this cache value. This default could be a callback
        // so we will execute the value function which will resolve it if needed.
        if (is_null($value)) {
            $value = is_callable($default) ? $default() : $default;
        }

        if (static::hasMacro()) {
            $value = $this->runMacro('getAfter', [$value, $key, false]);
        }

        return $value;
    }
public function get(string $key, $default = null)
    {
        $value = static::$handler->get($this->normalized($key));
        // If we could not find the cache value, we will get
        // the default value for this cache value. This default could be a callback
        // so we will execute the value function which will resolve it if needed.
        if (is_null($value)) {
            $value = is_callable($default) ? $default() : $default;
        }

        if (static::hasMacro()) {
            $value = $this->runMacro('getAfter', [$value, $key, false]);
        }

        return $value;
    }
Retrieve an item from the cache by key.

@param string $key     键
@param mixed  $default 默认值

@return mixed