PHP: pg_cancel_query - Manual

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Last updated: Sat, 27 Jan 2007

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# pg_cancel_query

(PHP 4 >= 4.2.0, PHP 5)

pg_cancel_query -- Cancel an asynchronous query

## Описание

bool pg_cancel_query ( resource connection )

pg_cancel_query() cancels an asynchronous query sent with pg_send_query(), pg_send_query_params() or pg_send_execute(). You cannot cancel a query executed using pg_query().

## Список параметров

`connection`

  PostgreSQL database connection resource.

## Возвращаемые значения

Возвращает `TRUE` в случае успешного завершения или `FALSE` в случае возникновения ошибки.

## Примеры

Пример 1. pg_cancel_query() example

`<?php
$dbconn = pg_connect("dbname=publisher") or die("Could not connect");
if (!pg_connection_busy($dbconn)) {
pg_send_query($dbconn, "select * from authors; select count(*) from authors;");
}
$res1 = pg_get_result($dbconn);
echo "First call to pg_get_result(): $res1\n";
$rows1 = pg_num_rows($res1);
echo "$res1 has $rows1 records\n\n";
// Cancel the currently running query. Will be the second query if it is
// still running.
pg_cancel_query($dbconn);
?>`

Результат выполнения данного примера:

    First call to pg_get_result(): Resource id #3
    Resource id #3 has 3 records

## Смотрите также

pg_send_query()
pg_connection_busy()

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Last updated: Sat, 27 Jan 2007
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