lib/MultiIniModifier.php
public function getValue($name, $section = 0, $key = null)
    {
        $val = $this->overrider->getValue($name, $section, $key);
        if ($val === null) {
            $val = $this->master->getValue($name, $section, $key);
        }

        return $val;
    }
public function getValue($name, $section = 0, $key = null)
    {
        $val = $this->overrider->getValue($name, $section, $key);
        if ($val === null) {
            $val = $this->master->getValue($name, $section, $key);
        }

        return $val;
    }
return the value of an option from the ini files. If the option doesn't exist,
it returns null.

@param string $name    the name of the option to retrieve
@param string $section the section where the option is. 0 is the global section
@param string $key     for option which is an item of array, the key in the array

@return mixed the value