FAST_ZPP for hot functions
For disabled function, to disable arguments checks, we have to reset num_args and some related flags (in addition to arg_info)
No need to do this check for master, ZEND_COMPILE_NO_BUILTIN_STRLEN already cover it
Merge branch 'master' of https://git.php.net/repository/php-src
C89 compat
remove unused variable
Use zend_string_tolower in zif_strtolower
Merge branch 'master' of https://git.php.net/repository/php-src