Gets data from this config object.
string $key: A string that maps to a key within the configuration data. For instance in the following configuation array:
array(
'foo' => array(
'bar' => 'baz',
),
);
A key of 'foo.bar' would return the string 'baz'. However, a key of 'foo' would return array('bar' => 'baz'). If no key is specified, then the entire data array is returned.
The configuration system does not retain data types. Every saved value is casted to a string. In most cases this is not an issue; however, it can cause issues with Booleans, which are casted to "1" (TRUE) or "0" (FALSE). In particular, code relying on === or !== will no longer function properly.
mixed The data that was requested.
http://php.net/manual/language.operators.comparison.php
public function get($key = '') {
if (!isset($this->overriddenData)) {
$this
->setOverriddenData();
}
if (empty($key)) {
return $this->overriddenData;
}
else {
$parts = explode('.', $key);
if (count($parts) == 1) {
return isset($this->overriddenData[$key]) ? $this->overriddenData[$key] : NULL;
}
else {
$value = NestedArray::getValue($this->overriddenData, $parts, $key_exists);
return $key_exists ? $value : NULL;
}
}
}