mysqli_stmt_num_rows

(PHP 5)

mysqli_stmt_num_rows

stmt->num_rows - Возвращает число строк в запросе.

Процедурный стиль вызова :

int mysqli_stmt_num_rows ( mysqli_stmt stmt )

Объектно-ориентированный стиль вызова (свойство):

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.

Примеры

Пример 1. Объектно-ориентированный стиль вызова

/* 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. Процедурный стиль вызова

/* 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.

Смотрите также: mysqli_stmt_affected_rows(), mysqli_prepare() и mysqli_stmt_store_result().

Все функции mysql
Описание на ru2.php.net
Описание на php.ru