# pg_result_memory_size

(PHP 8 >= 8.4.0)

pg_result_memory_size — Returns the amount of memory allocated for a query result

### 说明

pg_result_memory_size(PgSql\Result `$result`): int

Returns the amount of memory, in bytes, allocated to the specified query result PgSql\Result instance. This value is the same amount that would be freed by pg_free_result().

### 参数

`result`

  PgSql\Result 实例，由 pg_query()、pg_query_params() 或者 pg_execute()（等）返回。

### 返回值

Returns the memory amount in bytes.

### 示例

示例 #1 pg_result_memory_size() example

`<?php
$db = pg_connect("dbname=users user=me");
$res = pg_query($db, 'SELECT 1');
$size = pg_result_memory_size($res);
var_dump($size);
?>`

以上示例的输出类似于：

    int(3288)

### 参见

- pg_free_result() - 释放查询结果占用的内存

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