Php/docs/mysqli-stmt.send-long-data
mysqli_stmt::send_long_data
mysqli_stmt_send_long_data
(PHP 5, PHP 7)
mysqli_stmt::send_long_data -- mysqli_stmt_send_long_data — Send data in blocks
说明
面向对象风格
public mysqli_stmt::send_long_data
( int $param_nr
, string $data
) : bool
过程化风格
mysqli_stmt_send_long_data
( mysqli_stmt $stmt
, int $param_nr
, string $data
) : bool
Allows to send parameter data to the server in pieces (or chunks), e.g. if the
size of a blob exceeds the size of max_allowed_packet.
This function can be called multiple times to send the parts of a character or
binary data value for a column, which must be one of the TEXT or BLOB datatypes.
参数
stmt- 仅以过程化样式：由 mysqli_stmt_init() 返回的 statement 标识。
param_nr- Indicates which parameter to associate the data with. Parameters are numbered beginning with 0.
data- A string containing data to be sent.
返回值
成功时返回 true， 或者在失败时返回 false。
范例
Example #1 面向对象风格
<?php$stmt = $mysqli->prepare("INSERT INTO messages (message) VALUES (?)");$null = NULL;$stmt->bind_param("b", $null);$fp = fopen("messages.txt", "r");while (!feof($fp)) { $stmt->send_long_data(0, fread($fp, 8192));}fclose($fp);$stmt->execute();?>
参见
- mysqli_prepare() - 准备执行一个 SQL 语句
- mysqli_stmt_bind_param() - Binds variables to a prepared statement as parameters
