more precise func_* types

Author: staabm

resources/functionMap.php

@@ -3051,9 +3051,9 @@
 'ftp_ssl_connect' => ['resource|false', 'host'=>'string', 'port='=>'int', 'timeout='=>'int'],
 'ftp_systype' => ['string|false', 'stream'=>'resource'],
 'ftruncate' => ['bool', 'fp'=>'resource', 'size'=>'int'],
-'func_get_arg' => ['mixed', 'arg_num'=>'int'],
+'func_get_arg' => ['mixed', 'arg_num'=>'0|positive-int'],
 'func_get_args' => ['array'],
-'func_num_args' => ['int'],
+'func_num_args' => ['0|positive-int'],
 'function_exists' => ['bool', 'function_name'=>'string'],
 'fwrite' => ['int|false', 'fp'=>'resource', 'str'=>'string', 'length='=>'int'],
 'gc_collect_cycles' => ['int'],