_php_math_number_format_ex 1097 standard/math.c return _php_math_number_format_ex(d, dec, &dec_point, 1, &thousand_sep, 1); _php_math_number_format_ex 26 standard/php_math.h PHPAPI char *_php_math_number_format_ex(double, int, char *, size_t, char *, size_t);