src/datetime/OrderedList.php
public function offsetUnset($offset)
    {
        if (!$offset instanceof Date) {
            $offset = new Date($offset);
        }

        $index = $this->searchOffset($offset);
        unset($this->storage[$index]);
    }
public function offsetUnset($offset)
    {
        if (!$offset instanceof Date) {
            $offset = new Date($offset);
        }

        $index = $this->searchOffset($offset);
        unset($this->storage[$index]);
    }
(PHP 5 &gt;= 5.1.0)<br/>
Offset to unset
@link http://php.net/manual/en/arrayaccess.offsetunset.php
@param mixed $offset <p>
The offset to unset.
</p>
@return void