static inline void php_hash_string_xor(unsigned char *out, const unsigned char *in, const unsigned char *xor_with, const int length) {
	int i;
	for (i=0; i < length; i++) {
		out[i] = in[i] ^ xor_with[i];
	}
}
static inline void php_hash_string_xor(unsigned char *out, const unsigned char *in, const unsigned char *xor_with, const int length) {
	int i;
	for (i=0; i < length; i++) {
		out[i] = in[i] ^ xor_with[i];
	}
}