cubrid_num_rows
(PECL CUBRID >= 8.3.0)
cubrid_num_rows — Get the number of rows in the result set
說明
cubrid_num_rows(resource
$result): int
The cubrid_num_rows() function is used to get the
number of rows from the query result.
It can be used for SELECT statements.
For INSERT, UPDATE, or DELETE queries,
use the cubrid_affected_rows() function.
Note: The cubrid_num_rows() function can only be used for synchronous query; it returns 0 when it is used for asynchronous query.
返回值
Number of rows, when process is successful.
0 when the query was done in async mode.
-1, if SQL statement is not SELECT.
false when process is unsuccessful.
範例
示例 #1 cubrid_num_rows() example
<?php
$conn = cubrid_connect("localhost", 33000, "demodb", "dba");
$req = cubrid_execute($conn, "SELECT * FROM code");
$row_num = cubrid_num_rows($req);
$col_num = cubrid_num_cols($req);
printf("Row Num: %d\nColumn Num: %d\n", $row_num, $col_num);
cubrid_disconnect($conn);
?>
以上例程會輸出：
Row Num: 6 Column Num: 2
參見
- cubrid_execute() - Execute a prepared SQL statement
- cubrid_num_cols() - Return the number of columns in the result set
- cubrid_affected_rows() - Return the number of rows affected by the last SQL statement