PHP: pg_get_notify - Manual

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Last updated: Sat, 27 Jan 2007

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# pg_get_notify

(PHP 4 >= 4.3.0, PHP 5)

pg_get_notify -- Gets SQL NOTIFY message

## Описание

array pg_get_notify ( resource connection [, int result_type] )

pg_get_notify() gets notifications generated by a `NOTIFY` SQL command. To receive notifications, the `LISTEN` SQL command must be issued.

## Список параметров

`connection`

  PostgreSQL database connection resource.

`result_type`

  An optional parameter that controls how the returned array is indexed. `result_type` is a constant and can take the following values: `PGSQL_ASSOC`, `PGSQL_NUM` and `PGSQL_BOTH`. Using `PGSQL_NUM`, pg_get_notify() will return an array with numerical indices, using `PGSQL_ASSOC` it will return only associative indices while `PGSQL_BOTH`, the default, will return both numerical and associative indices.

## Возвращаемые значения

An array containing the `NOTIFY` message name and backend PID. Otherwise if no `NOTIFY` is waiting, then `FALSE` is returned.

## Примеры

Пример 1. PostgreSQL NOTIFY message

`<?php
$conn = pg_pconnect("dbname=publisher");
if (!$conn) {
echo "An error occured.\n";
exit;
}
// Listen 'author_updated' message from other processes
pg_query($conn, 'LISTEN author_updated;');
$notify = pg_get_notify($conn);
if (!$notify) {
echo "No messages\n";
} else {
print_r($notify);
}
?>`

## Смотрите также

pg_get_pid()

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Last updated: Sat, 27 Jan 2007
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