Php psr 4 autoload July 8, 2019 16 32 64 128 Php psr 4 autoloader example Php psr 4 autoloader Php autoload psr 4 composer Php autoload psr 4 example Php namespace autoload psr 4 Php composer autoload psr 4 not working Php does not comply with psr 4 autoloading standard Php autoload register