pg_free_result
(PHP 4 >= 4.2.0, PHP 5)
pg_free_result — Free result memory
Описание
bool pg_free_result
( resource $result
)
pg_free_result() frees the memory and data associated with the specified PostgreSQL query result resource.
This function need only be called if memory consumption during script execution is a problem. Otherwise, all result memory will be automatically freed when the script ends.
Замечание: This function used to be called pg_freeresult().
Список параметров
- result
-
PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).
Возвращаемые значения
Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.
Примеры
Пример #1 pg_free_result() example
<?php
$db = pg_connect("dbname=users user=me") || die();
$res = pg_query($db, "SELECT 1 UNION ALL SELECT 2");
$val = pg_fetch_result($res, 1, 0);
echo "First field in the second row is: ", $val, "\n";
pg_free_result($res);
?>
Результат выполнения данного примера:
First field in the second row is: 2
- 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
- pg_connect
- pg_connection_busy
- pg_connection_reset
- pg_connection_status
- pg_consume_input
- pg_convert
- pg_copy_from
- pg_copy_to
- pg_dbname
- pg_delete
- pg_end_copy
- pg_escape_bytea
- pg_escape_identifier
- pg_escape_literal
- pg_escape_string
- pg_execute
- pg_fetch_all_columns
- pg_fetch_all
- pg_fetch_array
- pg_fetch_assoc
- pg_fetch_object
- pg_fetch_result
- pg_fetch_row
- pg_field_is_null
- pg_field_name
- pg_field_num
- pg_field_prtlen
- pg_field_size
- pg_field_table
- pg_field_type_oid
- pg_field_type
- pg_flush
- pg_free_result
- pg_get_notify
- pg_get_pid
- pg_get_result
- pg_host
- pg_insert
- pg_last_error
- pg_last_notice
- pg_last_oid
- pg_lo_close
- pg_lo_create
- pg_lo_export
- pg_lo_import
- pg_lo_open
- pg_lo_read_all
- pg_lo_read
- pg_lo_seek
- pg_lo_tell
- pg_lo_truncate
- pg_lo_unlink
- pg_lo_write
- pg_meta_data
- pg_num_fields
- pg_num_rows
- pg_options
- pg_parameter_status
- pg_pconnect
- pg_ping
- pg_port
- pg_prepare
- pg_put_line
- pg_query_params
- pg_query
- pg_result_error_field
- pg_result_error
- pg_result_seek
- pg_result_status
- pg_select
- pg_send_execute
- pg_send_prepare
- pg_send_query_params
- pg_send_query
- pg_set_client_encoding
- pg_set_error_verbosity
- pg_socket
- pg_trace
- pg_transaction_status
- pg_tty
- pg_unescape_bytea
- pg_untrace
- pg_update
- pg_version
Коментарии
You do NOT need to call pg_free_result() on every result resource you create.
When result resources go out of scope, they are garbage collected just like everything else.
Unless you're hoarding your results somewhere, you can basically ignore this function.
Here's a little test you can run to confirm this: http://pastebin.com/ghw1PHuE