# sqlsrv_num_rows

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sqlsrv_num_rows — Retrieves the number of rows in a result set

### 说明

sqlsrv_num_rows ( resource `$stmt` ) : mixed

Retrieves the number of rows in a result set. This function requires that the statment resource be created with a static or keyset cursor. For more information, see sqlsrv_query(), sqlsrv_prepare(), or » Specifying a Cursor Type and Selecting Rows in the Microsoft SQLSRV documentation.

### 参数

`stmt`

  The statement for which the row count is returned. The statment resource must be created with a static or keyset cursor. For more information, see sqlsrv_query(), sqlsrv_prepare(), or » Specifying a Cursor Type and Selecting Rows in the Microsoft SQLSRV documentation.

### 返回值

Returns the number of rows retrieved on success and `FALSE` if an error occurred. If a forward cursor (the default) or dynamic cursor is used, `FALSE` is returned.

### 范例

Example #1 sqlsrv_num_rows() example

    <?php
    $server = "serverName\sqlexpress";
    $connectionInfo = array( "Database"=>"dbName", "UID"=>"username", "PWD"=>"password" );
    $conn = sqlsrv_connect( $server, $connectionInfo );

    $sql = "SELECT * FROM Table_1";
    $params = array();
    $options =  array( "Scrollable" => SQLSRV_CURSOR_KEYSET );
    $stmt = sqlsrv_query( $conn, $sql , $params, $options );

    $row_count = sqlsrv_num_rows( $stmt );

    if ($row_count === false)
       echo "Error in retrieveing row count.";
    else
       echo $row_count;
    ?>

### 参见

- sqlsrv_has_rows() - Indicates whether the specified statement has rows
- sqlsrv_rows_affected() - Returns the number of rows modified by the last INSERT, UPDATE, or DELETE query executed