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Описание

int pg_connection_status ( resource connection )

pg_connection_status() returns the status of the specified connection.

Список параметров

connection: PostgreSQL database connection resource.

Примеры

Пример 1. pg_connection_status() example

<?php $dbconn = pg_connect("dbname=publisher") or die("Could not connect"); $stat = pg_connection_status($dbconn); if ($stat === PGSQL_CONNECTION_OK) { echo 'Connection status ok'; } else { echo 'Connection status bad'; } ?>

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pg_connection_status

Mathieu De Zutter
02-Aug-2006 05:45


Being careful with the comparison operators is not enough:



<?php

if (pg_connection_status($link)===PGSQL_CONNECTION_BAD)

   reconnect($link);

?>

 

The reconnect won't be trigged when $link is null.



The manual is just wrong, there are three return values: PGSQL_CONNECTION_OK, PGSQL_CONNECTION_BAD, null

david dot tulloh at infaze dot com dot au
14-Jun-2005 08:33


I think zytox is incorrect, at least in PHP 5.0.4.

It returns null, but you have to be careful with your comparison operators.



As an example:

<?php

unset($null);

if (pg_connection_status($null)===PGSQL_CONNECTION_OK)

    echo 'this is not called';

if (pg_connection_status($null)==PGSQL_CONNECTION_OK)

    echo 'this is called because NULL==0 is true';

?>

zytox at hotmail dot com
02-Apr-2005 10:34


If the connection variable is NULL this function returns 0 in PHP 5.0.2. Havent figured out any more erratic values for the connection variable but be careful.

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pg_connection_status

Описание

Список параметров

Возвращаемые значения

Примеры

Смотрите также