Php/docs/mysqli-stmt.data-seek
mysqli_stmt::data_seek
mysqli_stmt_data_seek
(PHP 5, PHP 7)
mysqli_stmt::data_seek -- mysqli_stmt_data_seek — Seeks to an arbitrary row in statement result set
说明
面向对象风格
public mysqli_stmt::data_seek
( int $offset
) : void
过程化风格
mysqli_stmt_data_seek
( mysqli_stmt $stmt
, int $offset
) : void
Seeks to an arbitrary result pointer in the statement result set.
mysqli_stmt_store_result() must be called prior to mysqli_stmt_data_seek().
参数
stmt- 仅以过程化样式：由 mysqli_stmt_init() 返回的 statement 标识。
offset- Must be between zero and the total number of rows minus one (0.. mysqli_stmt_num_rows() - 1).
返回值
没有返回值。
范例
Example #1 面向对象风格
<?php/* Open a connection */$mysqli = new mysqli("localhost", "my_user", "my_password", "world");/* check connection */if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit();}$query = "SELECT Name, CountryCode FROM City ORDER BY Name";if ($stmt = $mysqli->prepare($query)) { /* execute query */ $stmt->execute(); /* bind result variables */ $stmt->bind_result($name, $code); /* store result */ $stmt->store_result(); /* seek to row no. 400 */ $stmt->data_seek(399); /* fetch values */ $stmt->fetch(); printf ("City: %s Countrycode: %s\n", $name, $code); /* close statement */ $stmt->close();}/* close connection */$mysqli->close();?>
Example #2 过程化风格
<?php/* Open a connection */$link = mysqli_connect("localhost", "my_user", "my_password", "world");/* check connection */if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit();}$query = "SELECT Name, CountryCode FROM City ORDER BY Name";if ($stmt = mysqli_prepare($link, $query)) { /* execute query */ mysqli_stmt_execute($stmt); /* bind result variables */ mysqli_stmt_bind_result($stmt, $name, $code); /* store result */ mysqli_stmt_store_result($stmt); /* seek to row no. 400 */ mysqli_stmt_data_seek($stmt, 399); /* fetch values */ mysqli_stmt_fetch($stmt); printf ("City: %s Countrycode: %s\n", $name, $code); /* close statement */ mysqli_stmt_close($stmt);}/* close connection */mysqli_close($link);?>
以上例程会输出：
City: Benin City Countrycode: NGA
