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PHP. Руководство по PHP. 2005

mysqli_stmt_num_rows

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mysqli_stmt_num_rows

(PHP 5)mysqli_stmt_num_rows

(no version information, might be only in CVS)stmt->num_rows -- Return the number of rows in statements result set

Description

Procedural style :int mysqli_stmt_num_rows (mysqli_stmt stmt)

Object oriented style (property):class mysqli_stmt {


int num_rows


}

Returns the number of rows in the result set. The use of mysqli_stmt_num_rows() depends on whether or not you used mysqli_stmt_store_result() to buffer the entire result set in the statement handle.

If you use mysqli_stmt_store_result(), mysqli_stmt_num_rows() may be called immediately.

Возвращаемые значения

An integer representing the number of rows in result set.

Смотрите также

mysqli_stmt_affected_rows(), mysqli_prepare() и mysqli_stmt_store_result().

Примеры

Пример 1. Object oriented style

<?php

/* Open a connection */

$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

/* check connection */

if (mysqli_connect_errno()){

printf("Connect failed: %s\n", mysqli_connect_error());

exit();

}

$query = "SELECT Name, CountryCode FROM City ORDER BY Name LIMIT 20";

if ($stmt = $mysqli->prepare($query)){

/* execute query */

$stmt->execute();

/* store result */

$stmt->store_result();

printf("Number of rows: %d.\n", $stmt->num_rows);

/* close statement */

$stmt->close();

}

/* close connection */

$mysqli->close();

?>

Пример 2. Procedural style

<?php

/* Open a connection */

$link = mysqli_connect("localhost", "my_user", "my_password", "world");

/* check connection */

if (mysqli_connect_errno()){

printf("Connect failed: %s\n", mysqli_connect_error());

exit();

}

$query = "SELECT Name, CountryCode FROM City ORDER BY Name LIMIT 20";

if ($stmt = mysqli_prepare($link, $query)){

/* execute query */

mysqli_stmt_execute($stmt);

/* store result */

mysqli_stmt_store_result($stmt);

printf("Number of rows: %d.\n", mysqli_stmt_num_rows($stmt));

/* close statement */

mysqli_stmt_close($stmt);

}

/* close connection */

mysqli_close($link);

?>

Результат выполнения данного примера:

Number of rows: 20.

Пред.

Начало

След.

mysqli_stmt_init

Уровень выше

mysqli_stmt_param_count

Отвечу на любые вопросы. С уважением, Дмитрий Владимирович.

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