#define ZEND_HANDLE_NUMERIC(key, length, func) do {								\
	register const char *tmp = key;												\
																				\
	if (*tmp == '-') {															\
		tmp++;																	\
	}																			\
	if (*tmp >= '0' && *tmp <= '9') { /* possibly a numeric index */			\
		const char *end = key + length - 1;										\
		long idx;																\
																				\
		if (*tmp == '0' && length > 2) {										\
			/* don't accept numbers with leading zeros */						\
			break;																\
		} else if (end - tmp >  MAX_LENGTH_OF_LONG - 1 || (SIZEOF_LONG == 4 &&	\
			       end - tmp == MAX_LENGTH_OF_LONG - 1 && *tmp > '2')) {		\
			/* don't accept numbers too long */									\
			break;																\
		} else {																\
			idx = (*tmp - '0');													\
			while (++tmp < end && *tmp >= '0' && *tmp <= '9') {					\
				idx = (idx * 10) + (*tmp - '0');								\
			}																	\
			if (tmp == end && *end == '\0') {									\
				if (*key == '-') {												\
					idx = -idx;													\
					if (idx > 0) { /* overflow */								\
						break;													\
					}															\
				} else if (idx < 0) { /* overflow */							\
					break;														\
				}																\
				return func;													\
			}																	\
		}																		\
	}																			\
} while (0)

#define ZEND_HANDLE_U_NUMERIC(key, length, func) do {									\
	register const UChar *tmp = key;													\
																						\
	if (*tmp == 0x2D /*'-'*/) {															\
		tmp++;																			\
	}																					\
	if (*tmp >= 0x30 /*'0'*/ && *tmp <= 0x39 /*'9'*/) { /* possibly a numeric index */	\
		const UChar *end = key + length - 1;											\
		long idx;																		\
																						\
		if (*tmp == 0x30 && length > 2) {												\
			/* don't accept numbers with leading zeros */								\
			break;																		\
		} else if (end - tmp >  MAX_LENGTH_OF_LONG - 1 || (SIZEOF_LONG == 4 &&			\
			       end - tmp == MAX_LENGTH_OF_LONG - 1 && *tmp > 0x32)) {				\
			/* don't accept numbers too long */											\
			break;																		\
		} else {																		\
			idx = (*tmp - 0x30);														\
			while (++tmp < end && *tmp >= 0x30 && *tmp <= 0x39) {						\
				idx = (idx * 10) + (*tmp - 0x30);										\
			}																			\
			if (tmp == end && *end == 0) {												\
				if (*key == 0x2D) {														\
					idx = -idx;															\
					if (idx > 0) { /* overflow */										\
						break;															\
					}																	\
				} else if (idx < 0) { /* overflow */									\
					break;																\
				}																		\
				return func;															\
			}																			\
		}																				\
	}																					\
} while (0)