pg_transaction_status()
(PHP 5 >= 5.1.0, PHP 7)
Returns the current in-transaction status of the server
说明
pg_transaction_status(resource $connection): int
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 parameterautocommitset 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'; } ?>
This function is implemented in C, so there's no way to mimic it in SQL for older versions of PHP. But you can mimic some of the functionality by using a wrapper which keeps track of when you begin and commit/rollback transactions.