src/web/Request.php
public function getBodyParam($name, $defaultValue = null)
    {
        $params = $this->getBodyParams();

        return isset($params[$name]) ? $params[$name] : $defaultValue;
    }
public function getBodyParam($name, $defaultValue = null)
    {
        $params = $this->getBodyParams();

        return isset($params[$name]) ? $params[$name] : $defaultValue;
    }
Returns the named request body parameter value.
If the parameter does not exist, the second parameter passed to this method will be returned.
@param string $name the parameter name
@param mixed $defaultValue the default parameter value if the parameter does not exist.
@return mixed the parameter value
@see getBodyParams()
@see setBodyParams()