Вы не зарегистрированы? Нажмите здесь для регистрации.
Забыли пароль? Запросите новый здесь.
|
Вы должны авторизироваться, чтобы добавить сообщение.
|
|
|
Последние активные темы форума |
|
mysqli_stmt_result_metadata
(PHP 5) mysqli_stmt_result_metadata -- Returns result set metadata from a prepared statement
DescriptionПроцедурный стиль: mixed mysqli_stmt_result_metadata ( mysqli_stmt stmt ) Объектно-ориентированный стиль (method): class mysqli_stmt { mixed result_metadata ( void ) } If a statement passed to mysqli_prepare() is one that produces
a result set, mysqli_stmt_result_metadata() returns the result object
that can be used to process the meta information such as total number of fields
and individual field information.
Замечание: This result set pointer can be passed as an argument to any of the
field-based functions that process result set metadata, such as:
The result set structure should be freed when you are done with it,
which you can do by passing it to mysqli_free_result()
Замечание:
The result set returned by mysqli_stmt_result_metadata() contains only
metadata. It does not contain any row results. The rows are obtained by using the
statement handle with mysqli_fetch().
Возвращаемые значенияmysqli_stmt_result_metadata() returns a result object or FALSE if
an error occured.
Примеры
Пример 1. Объектно-ориентированный стиль
<?php
$mysqli
= new
mysqli
(
"localhost"
,
"my_user"
,
"my_password"
,
"test"
);
$mysqli
->
query
(
"DROP TABLE IF EXISTS friends"
);
$mysqli
->
query
(
"CREATE TABLE friends (id int, name varchar(20))"
);
$mysqli
->
query
(
"INSERT INTO friends VALUES (1,'Hartmut'), (2, 'Ulf')"
);
$stmt
=
$mysqli
->
prepare
(
"SELECT id, name FROM friends"
);
$stmt
->
execute
();
/* get resultset for metadata */
$result
=
$stmt
->
result_metadata
();
/* retrieve field information from metadata result set */
$field
=
$result
->
fetch_field
();
printf
(
"Fieldname: %s\n"
,
$field
->
name
);
/* close resultset */
$result
->
close
();
/* close connection */
$mysqli
->
close
();
?>
|
|
Пример 2. Процедурный стиль
<?php
$link
=
mysqli_connect
(
"localhost"
,
"my_user"
,
"my_password"
,
"test"
);
mysqli_query
(
$link
,
"DROP TABLE IF EXISTS friends"
);
mysqli_query
(
$link
,
"CREATE TABLE friends (id int, name varchar(20))"
);
mysqli_query
(
$link
,
"INSERT INTO friends VALUES (1,'Hartmut'), (2, 'Ulf')"
);
$stmt
=
mysqli_prepare
(
$link
,
"SELECT id, name FROM friends"
);
mysqli_stmt_execute
(
$stmt
);
/* get resultset for metadata */
$result
=
mysqli_stmt_result_metadata
(
$stmt
);
/* retrieve field information from metadata result set */
$field
=
mysqli_fetch_field
(
$result
);
printf
(
"Fieldname: %s\n"
,
$field
->
name
);
/* close resultset */
mysqli_free_result
(
$result
);
/* close connection */
mysqli_close
(
$link
);
?>
|
|
|
· Гостей: 23
· Пользователей: 0
· Всего пользователей: 453
· Новый пользователь: ZDA
|
|