/**
* Get global key's value.
* An expression to access array elements or a function can be given.
* @param string $key Expression key, can have parenthesis or square brackets operator.
* @return mixed|callable|array If you access a function without the
* parenthesis operator or an array without square brackets operator
* then this method will return the callable or the whole array respectively.
* @example
* ```php
* Globals::get('myVarible');
*
* Globals::get('rand-boolean()');
*
* Globals::get('rand-integer(10)'); //A random integer from 0 to 10
*
* Globals::get('myArray[1]'); //Get second array element
* ```
* @throws \Exception When expression key is invalid.
* @throws \Phramework\Exceptions\NotFoundException When key is not found.
*/
public static function get($key = null, $operators = null)
{
if (static::$globals === null) {
static::initializeGlobals();
}
if ($key !== null) {
$parsed = Expression::parse($key);
if ($parsed === null) {
throw new \Exception(sprintf('Invalid key "%s"', $key));
}
if (!static::exists($parsed->key)) {
throw new UnsetGlobalException($parsed->key);
}
$global = static::$globals->{$parsed->key};
switch ($parsed->mode) {
case Globals::KEY_FUNCTION:
$functionParameters = [];
if (property_exists($parsed, 'parameters')) {
$functionParameters = Globals::handleFunctionVariable($parsed->parameters);
}
return call_user_func_array($global, $functionParameters);
case Globals::KEY_ARRAY:
return $global[(int) Globals::handleArrayVariable($parsed->index)];
case Globals::KEY_VARIABLE:
default:
return $global;
}
}
return static::$globals;
}
