# fbsql_num_rows

(PHP 4 >= 4.0.6, PHP 5, PHP 7)

fbsql_num_rows — Get number of rows in result

### 说明

fbsql_num_rows ( resource `$result` ) : int

Gets the number of rows in the given `result` set.

This function is only valid for SELECT statements. To retrieve the number of rows returned from a INSERT, UPDATE or DELETE query, use fbsql_affected_rows().

### 参数

`result`

  由 fbsql_query() 或 fbsql_db_query() 返回的结果标识符。

### 返回值

Returns the number of rows returned by the last SELECT statement.

### 范例

Example #1 fbsql_num_rows() example

    <?php

    $link = fbsql_connect("localhost", "username", "password");
    fbsql_select_db("database", $link);

    $result = fbsql_query("SELECT * FROM table1;", $link);
    $num_rows = fbsql_num_rows($result);

    echo "$num_rows Rows\n";

    ?>

### 参见

- fbsql_affected_rows() - Get number of affected rows in previous FrontBase operation
- fbsql_connect() - Open a connection to a FrontBase Server
- fbsql_select_db() - Select a FrontBase database
- fbsql_query() - Send a FrontBase query