例如以下这段代码:
#define PHPMY_UNBUFFERED_QUERY_CHECK() \
{ \
if (mysql->active_result_id) { \
do { \
int type; \
MYSQL_RES *mysql_result; \
\
mysql_result = (MYSQL_RES *) zend_list_find(mysql->active_result_id, &type); \
if (mysql_result && type==le_result) { \
if (!mysql_eof(mysql_result)) { \
php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Function called without first fetching all rows from a previous unbuffered query"); \
while (mysql_fetch_row(mysql_result)); \
} \
zend_list_delete(mysql->active_result_id); \
mysql->active_result_id = 0; \
} \
} while(0); \
} \
}
行末的“\”有什么特殊意义?