PHP. Руководство по PHP. 2005

mysqli_stmt_affected_rows

(PHP 5)mysqli_stmt_affected_rows

(no version information, might be only in CVS)mysqli_stmt->affected_rows -- Returns the total number of rows changed, deleted, or

inserted by the last executed statement

Description

Procedural style :int mysqli_stmt_affected_rows (mysqli_stmt stmt)

Object oriented style (property):class mysqli_stmt {

int affected_rows

}

mysqli_stmt_affected_rows() returns the number of rows affected

by INSERT, UPDATE, or DELETE query. If the last query was invalid, this function will return -1.

The mysqli_stmt_affected_rows() function only works with queries

which update a table. In order to return the number of rows from a SELECT query, use

the mysqli_stmt_num_rows() function instead.

Возвращаемые значения

An integer greater than zero indicates the number of rows affected or retrieved.
Zero indicates that no records where updated for an UPDATE/DELETE statement, no
rows matched the WHERE clause in the query or that no query has yet been executed.
-1 indicates that the query has returned an error.
Замечание:
If the number of affected rows is greater than maximal PHP int value, the number of
affected rows will be returned as a string value.

Примеры

Пример 1. Object oriented style


<?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();
}

/* create temp table */
$mysqli->query("CREATE TEMPORARY TABLE myCountry LIKE Country");

$query = "INSERT INTO myCountry SELECT * FROM Country WHERE Code LIKE ?";

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

/* Bind variable for placeholder */
$code = 'A%';
$stmt->bind_param("s", $code);

/* execute statement */
$stmt->execute();

printf("rows inserted: %d\n", $stmt->affected_rows);

/* close statement */
$stmt->close();
}

/* close connection */
$mysqli->close();
?>

Пример 2. Procedural style


<?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();
}

/* create temp table */
mysqli_query($link, "CREATE TEMPORARY TABLE myCountry LIKE Country");

$query = "INSERT INTO myCountry SELECT * FROM Country WHERE Code LIKE ?";

/* prepare statement */
if ($stmt = mysqli_prepare($link, $query)){

/* Bind variable for placeholder */
$code = 'A%';
mysqli_stmt_bind_param($stmt, "s", $code);

/* execute statement */
mysqli_stmt_execute($stmt);

printf("rows inserted: %d\n", mysqli_stmt_affected_rows($stmt));

/* close statement */
mysqli_stmt_close($stmt);
}

/* close connection */
mysqli_close($link);
?>

Результат выполнения данного примера:

rows inserted: 17

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PHP. Руководство по PHP. 2005

mysqli_stmt_affected_rows

Description

Возвращаемые значения

Смотрите также

Примеры