PHP使用php-resque库配合Redis实现MQ消息队列的教程
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2024-01-31
(PHP 5 >= 5.1.0)
pg_transaction_status — Returns the current in-transaction status of the server.
说明
int pg_transaction_status ( resource$connection
)
Returns the current in-transaction status of the server.
Cautionpg_transaction_status() will give incorrect results when using a PostgreSQL 7.3 server that has the parameter autocommit set to off. The server-side autocommit feature has been deprecated and does not exist in later server versions.
参数
connection
PostgreSQL database connection resource.
返回值
The status can be PGSQL_TRANSACTION_IDLE (currently idle),
PGSQL_TRANSACTION_ACTIVE (a command is in progress),
PGSQL_TRANSACTION_INTRANS (idle, in a valid transaction block),
or PGSQL_TRANSACTION_INERROR (idle, in a failed transaction block).
PGSQL_TRANSACTION_UNKNOWN is reported if the connection is bad.
PGSQL_TRANSACTION_ACTIVE is reported only when a query
has been sent to the server and not yet completed.
范例
Example #1 pg_transaction_status() example
<?php
$dbconn = pg_connect("dbname=publisher") or die("Could not connect");
$stat = pg_transaction_status($dbconn);
if ($stat === PGSQL_TRANSACTION_UNKNOWN) {
echo 'Connection is bad';
} else if ($stat === PGSQL_TRANSACTION_IDLE) {
echo 'Connection is currently idle';
} else {
echo 'Connection is in a transaction state';
}
?>
