ns_param_len     1174 ext/xml/xml.c  	int ns_param_len = 0;
ns_param_len     1178 ext/xml/xml.c  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, (ns_support ? "|ss": "|s"), &encoding_param, &encoding_param_len, &ns_param, &ns_param_len) == FAILURE) {