(PHP 5, PHP 7, PHP 8)
pg_version — Returns an array with client, protocol and server version (when available)
$connection = ?
) : arraypg_version() returns an array with the client, protocol and server version. Protocol and server versions are only available if PHP was compiled with PostgreSQL 7.4 or later.
For more detailed server information, use pg_parameter_status().
connection
PostgreSQL database connection resource. When
connection is not present, the default connection
is used. The default connection is the last connection made by
pg_connect() or pg_pconnect().
Returns an array with client, protocol
and server keys and values (if available). Returns
false on error or invalid connection.
Example #1 pg_version() example
<?php
$dbconn = pg_connect("host=localhost port=5432 dbname=mary")
or die("Could not connect");
$v = pg_version($dbconn);
echo $v['client'];
?>
以上例程会输出：
7.4
I note that the array element for "protocol" seemingly has no value, being reported as:
["protocol"]=> int(3)
whereas the array element for e.g. "server" is reported as (in my particular case):
["server"]=> string(5) "10.12"
A call to json_encode() however gives:
"protocol":3 and "server":"10.12"
Complete output off this function for me is:
array(13) {
["client"]=>
string(5) "9.6.9"
["protocol"]=>
int(3)
["server"]=>
string(4) "12.1"
["server_encoding"]=>
string(4) "UTF8"
["client_encoding"]=>
string(4) "UTF8"
["is_superuser"]=>
string(2) "on"
["session_authorization"]=>
string(8) "postgres"
["DateStyle"]=>
string(8) "ISO, MDY"
["IntervalStyle"]=>
string(8) "postgres"
["TimeZone"]=>
string(10) "US/Arizona"
["integer_datetimes"]=>
string(2) "on"
["standard_conforming_strings"]=>
string(2) "on"
["application_name"]=>
string(0) ""
}