PHP マニュアル: Get the number of rows in the result set

説明

int cubrid_num_rows(resource $result)

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.

パラメータ

result: result comes from a call to cubrid_execute, cubrid_query and cubrid_prepare

戻り値

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.

例

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);
?>

上の例の出力は以下となります。

Row Num: 6
Column Num: 2

参考

cubrid_execute
cubrid_num_cols
cubrid_affected_rows