Makes the next row in a result set available for reading

# sqlsrv_fetch

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sqlsrv_fetch — Makes the next row in a result set available for reading

### 说明

function sqlsrv_fetch(resource `$stmt`, int `$row` = ?, int `$offset` = ?): mixed

Makes the next row in a result set available for reading. Use sqlsrv_get_field() to read the fields of the row.

### 参数

`stmt`
  A statement resource created by executing sqlsrv_query() or sqlsrv_execute().
`row`

  The row to be accessed. This parameter can only be used if the specified statement was prepared with a scrollable cursor. In that case, this parameter can take on one of the following values:

  - SQLSRV_SCROLL_NEXT
  - SQLSRV_SCROLL_PRIOR
  - SQLSRV_SCROLL_FIRST
  - SQLSRV_SCROLL_LAST
  - SQLSRV_SCROLL_ABSOLUTE
  - SQLSRV_SCROLL_RELATIVE
`offset`
  Specifies the row to be accessed if the row parameter is set to `SQLSRV_SCROLL_ABSOLUTE` or `SQLSRV_SCROLL_RELATIVE`. Note that the first row in a result set has index 0.

### 返回值

Returns `true` if the next row of a result set was successfully retrieved, `false` if an error occurs, and `null` if there are no more rows in the result set.

### 示例

示例 #1 sqlsrv_fetch() example

The following example demonstrates how to retrieve a row with sqlsrv_fetch() and get the row fields with sqlsrv_get_field().

    <?php
    $serverName = "serverName\sqlexpress";
    $connectionInfo = array( "Database"=>"dbName", "UID"=>"username", "PWD"=>"password");
    $conn = sqlsrv_connect( $serverName, $connectionInfo);
    if( $conn === false ) {
         die( print_r( sqlsrv_errors(), true));
    }

    $sql = "SELECT Name, Comment
            FROM Table_1
            WHERE ReviewID=1";
    $stmt = sqlsrv_query( $conn, $sql);
    if( $stmt === false ) {
         die( print_r( sqlsrv_errors(), true));
    }

    // Make the first (and in this case, only) row of the result set available for reading.
    if( sqlsrv_fetch( $stmt ) === false) {
         die( print_r( sqlsrv_errors(), true));
    }

    // Get the row fields. Field indices start at 0 and must be retrieved in order.
    // Retrieving row fields by name is not supported by sqlsrv_get_field.
    $name = sqlsrv_get_field( $stmt, 0);
    echo "$name: ";

    $comment = sqlsrv_get_field( $stmt, 1);
    echo $comment;
    ?>

### 参见

- sqlsrv_get_field() - Gets field data from the currently selected row
- sqlsrv_fetch_array() - Returns a row as an array
- sqlsrv_fetch_object() - Retrieves the next row of data in a result set as an object

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