Dynamic PHP class autoloader based on namespace and filename

autoload.php

<?php

spl_autoload_register( function( $class_name ) {
	$prefix = 'NAMESPACE';

	if ( 0 !== strpos( $class_name, $prefix ) ) {
		return;
	}

	$class = substr( str_replace( "\\", '/', $class_name ), strlen( $prefix ) + 1 );
	$path = __DIR__ . '/include/' . $class . '.php';

	if ( is_readable( $path ) ) {
		include( $path );
	}
});