spl_autoload_functions
PHP 5 >= 5.1.0, PHP 7, PHP 8
spl_autoload_functions - Return all registered __autoload() functions
Manual
spl_autoload_functions(
Get all registered __autoload() functions.
Parameters
This function has no parameters.
Return Values
An array of all registered __autoload functions. If the autoload queue is not activated then the return value is false. If no function is registered the return value will be an empty array.