pg_version
(PHP 5)
pg_version — Returns an array with client, protocol and server version (when available)
Описание
pg_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().
Список параметров
- 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().
Возвращаемые значения
Returns an array with client, protocol and server_version keys and values (if available). Returns FALSE on error or invalid connection.
Примеры
Пример #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'];
?>
Результат выполнения данного примера:
7.4
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для работы с базами данных
- Расширения для работы с базами данных отдельных производителей
- PostgreSQL
- pg_affected_rows
- pg_cancel_query
- pg_client_encoding
- pg_close
- pg_connect_poll
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- pg_connection_busy
- pg_connection_reset
- pg_connection_status
- pg_consume_input
- pg_convert
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- pg_fetch_assoc
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- pg_fetch_row
- pg_field_is_null
- pg_field_name
- pg_field_num
- pg_field_prtlen
- pg_field_size
- pg_field_table
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- pg_free_result
- pg_get_notify
- pg_get_pid
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- pg_num_fields
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- pg_put_line
- pg_query_params
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- pg_result_error_field
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- pg_socket
- pg_trace
- pg_transaction_status
- pg_tty
- pg_unescape_bytea
- pg_untrace
- pg_update
- pg_version
Коментарии
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) ""
}
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"