src/Ko/SharedMemory.php
public function offsetGet($offset)
    {
        $task = function() use ($offset) {
            $key = $this->getKey($offset);
            if(shm_has_var($this->id, $key)) {
                return shm_get_var($this->id, $key);
            }

            return null;
        };

        return $this->lockExecute($task);
    }
public function offsetGet($offset)
    {
        $task = function() use ($offset) {
            $key = $this->getKey($offset);
            if(shm_has_var($this->id, $key)) {
                return shm_get_var($this->id, $key);
            }

            return null;
        };

        return $this->lockExecute($task);
    }
(PHP 5 &gt;= 5.0.0)<br/>
Offset to retrieve
@link http://php.net/manual/en/arrayaccess.offsetget.php

@param mixed $offset <p>
The offset to retrieve.
</p>

@return mixed Can return all value types.