isostr_len       4421 ext/date/php_date.c 	int   isostr_len = 0;
isostr_len       4428 ext/date/php_date.c 			if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS() TSRMLS_CC, "s|l", &isostr, &isostr_len, &options) == FAILURE) {
isostr_len       4440 ext/date/php_date.c 		date_period_initialize(&(dpobj->start), &(dpobj->end), &(dpobj->interval), &recurrences, isostr, isostr_len TSRMLS_CC);