mysql_thread_id   285 ext/mysql/php_mysql.c 	PHP_FE(mysql_thread_id,								arginfo__optional_mysql_link)
mysql_thread_id  1286 ext/mysql/php_mysql.c 	RETURN_LONG((long) mysql_thread_id(mysql->conn));
mysql_thread_id  2667 ext/mysqli/mysqli_api.c 	RETURN_LONG((long) mysql_thread_id(mysql->mysql));