Deprecated: Optional parameter $keys declared before required parameter $cms_id is implicitly treated as a required parameter in /home/www/dev/work/class/blog/CmsKey.php on line 75

Deprecated: Creation of dynamic property lvesu\lvesu\controller\blog\php::$title is deprecated in /home/www/dev/work/website/lvesu/class/controller/blog/php.php on line 28

Deprecated: Creation of dynamic property lvesu\lvesu\controller\blog\php::$outlink is deprecated in /home/www/dev/work/website/lvesu/template/blog/cms/php.manual.tpl on line 2

Deprecated: Creation of dynamic property lvesu\lvesu\controller\blog\php::$status is deprecated in /home/www/dev/work/website/lvesu/template/blog/index.head.php on line 2
PHP - Manual: pg_set_chunked_rows_size - 互联网笔记

略微加速

PHP官方手册 - 互联网笔记

PHP - Manual: pg_set_chunked_rows_size

2025-04-26

pg_set_chunked_rows_size

(PHP 8 >= 8.4.0)

pg_set_chunked_rows_sizeSet the query results to be retrieved in chunk mode

说明

pg_set_chunked_rows_size(PgSql\Connection $connection, int $size): bool

Set the query results to be retrieved in chunk mode. The query results returned afterward will be divided into multiple chunks, each containing up to size rows. This function must be called before retrieving results with pg_get_result(). This function is only available when libpq is version 17 or higher.

参数

connection

PgSql\Connection 实例。

size
The number of rows to be retrieved in each chunk.

返回值

成功时返回 true, 或者在失败时返回 false

错误/异常

If size is less than 1, a ValueError will be thrown.

示例

示例 #1 pg_result_memory_size() example

<?php

$conn
= pg_connect($conn_str);

for (
$i = 0; $i < 10; $i ++) {
pg_query($conn, "INSERT INTO users DEFAULT VALUES");
}

pg_send_query($conn, "SELECT * FROM users");
pg_set_chunked_rows_size($conn, 1);

$result = pg_get_result($conn);
var_dump(pg_num_rows($result));

// No effect after the result is retrieved
var_dump(pg_set_chunked_rows_size($conn, 10));

以上示例会输出:

int(1)
bool(false)

参见

添加备注

用户贡献的备注

此页面尚无用户贡献的备注。

官方地址:https://www.php.net/manual/en/function.pg-set-chunked-rows-size.php

北京半月雨文化科技有限公司.版权所有 京ICP备12026184号-3