|
Последние активные темы форума |
|
mysqli_num_rows
(PHP 5) mysqli_num_rows --
Gets the number of rows in a result
DescriptionПроцедурный стиль: mixed mysqli_num_rows ( mysqli result ) Объектно-ориентированный стиль (property): class mysqli { mixed num_rows } Returns the number of rows in the result set.
The use of mysqli_num_rows() depends on whether you use
buffered or unbuffered result sets.
In case you use unbuffered resultsets mysqli_num_rows()
will not correct the correct number of rows until all the rows in the result
have been retrieved.
Возвращаемые значенияReturns number of rows in the result set.
Замечание:
If the number of rows is greater than maximal int value, the number
will be returned as a string.
Примеры
Пример 1. Объектно-ориентированный стиль
<?php
$mysqli
= new
mysqli
(
"localhost"
,
"my_user"
,
"my_password"
,
"world"
);
/* check connection */
if (
mysqli_connect_errno
()) {
printf
(
"Connect failed: %s\n"
,
mysqli_connect_error
());
exit();
}
if (
$result
=
$mysqli
->
query
(
"SELECT Code, Name FROM Country ORDER BY Name"
)) {
/* determine number of rows result set */
$row_cnt
=
$result
->
num_rows
;
printf
(
"Result set has %d rows.\n"
,
$row_cnt
);
/* close result set */
$result
->
close
();
}
/* close connection */
$mysqli
->
close
();
?>
|
|
Пример 2. Процедурный стиль
<?php
$link
=
mysqli_connect
(
"localhost"
,
"my_user"
,
"my_password"
,
"world"
);
/* check connection */
if (
mysqli_connect_errno
()) {
printf
(
"Connect failed: %s\n"
,
mysqli_connect_error
());
exit();
}
if (
$result
=
mysqli_query
(
$link
,
"SELECT Code, Name FROM Country ORDER BY Name"
)) {
/* determine number of rows result set */
$row_cnt
=
mysqli_num_rows
(
$result
);
printf
(
"Result set has %d rows.\n"
,
$row_cnt
);
/* close result set */
mysqli_free_result
(
$result
);
}
/* close connection */
mysqli_close
(
$link
);
?>
|
|
Результат выполнения данного примера:
|