PHP Manual: Default implementation for _

Description

void spl_autoload(string $class, stringnull $file_extensions = null)

This function is intended to be used as a default implementation for __autoload. If nothing else is specified and spl_autoload_register is called without any parameters then spl_autoload will be used for any later call to __autoload.

Parameters

class: The name of the class (and namespace) being instantiated.
file_extensions: By default it checks all include_paths to contain filenames built up by the lowercase class name appended by the filename extensions .inc and .php.

Return Values

No value is returned.

Errors/Exceptions

Throws LogicException when the class is not found and there are no other autoloaders registered.

Changelog

Version	Description
8.0.0	`file_extensions` is now nullable.