Gets the number of affected rows in a previous MySQL operation

# mysqli::$affected_rows

# mysqli_affected_rows

(PHP 5, PHP 7, PHP 8)

mysqli::$affected_rows -- mysqli_affected_rows — Gets the number of affected rows in a previous MySQL operation

### Description

Object-oriented style

int|string $mysqli->affected_rows;

Procedural style

mysqli_affected_rows(mysqli `$mysql`): int|string

Returns the number of rows affected by the last `INSERT`, `UPDATE`, `REPLACE` or `DELETE` query. Works like mysqli_num_rows() for `SELECT` statements.

### Parameters

`mysql`

  Procedural style only: A mysqli object returned by mysqli_connect() or mysqli_init()

### Return Values

An integer greater than zero indicates the number of rows affected or retrieved. Zero indicates that no records were updated for an `UPDATE` statement, no rows matched the `WHERE` clause in the query or that no query has yet been executed. `-1` indicates that the query returned an error or that mysqli_affected_rows() was called for an unbuffered `SELECT` query.

> Note:

> If the number of affected rows is greater than the maximum int value (`PHP_INT_MAX`), the number of affected rows will be returned as a string.

### Examples

Example #1 $mysqli->affected_rows example

Object-oriented style

`<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* Insert rows */
$mysqli->query("CREATE TABLE Language SELECT * from CountryLanguage");
printf("Affected rows (INSERT): %d\n", $mysqli->affected_rows);
$mysqli->query("ALTER TABLE Language ADD Status int default 0");
/* update rows */
$mysqli->query("UPDATE Language SET Status=1 WHERE Percentage > 50");
printf("Affected rows (UPDATE): %d\n", $mysqli->affected_rows);
/* delete rows */
$mysqli->query("DELETE FROM Language WHERE Percentage < 50");
printf("Affected rows (DELETE): %d\n", $mysqli->affected_rows);
/* select all rows */
$result = $mysqli->query("SELECT CountryCode FROM Language");
printf("Affected rows (SELECT): %d\n", $mysqli->affected_rows);
/* Delete table Language */
$mysqli->query("DROP TABLE Language");`

Procedural style

`<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* Insert rows */
mysqli_query($link, "CREATE TABLE Language SELECT * from CountryLanguage");
printf("Affected rows (INSERT): %d\n", mysqli_affected_rows($link));
mysqli_query($link, "ALTER TABLE Language ADD Status int default 0");
/* update rows */
mysqli_query($link, "UPDATE Language SET Status=1 WHERE Percentage > 50");
printf("Affected rows (UPDATE): %d\n", mysqli_affected_rows($link));
/* delete rows */
mysqli_query($link, "DELETE FROM Language WHERE Percentage < 50");
printf("Affected rows (DELETE): %d\n", mysqli_affected_rows($link));
/* select all rows */
$result = mysqli_query($link, "SELECT CountryCode FROM Language");
printf("Affected rows (SELECT): %d\n", mysqli_affected_rows($link));
/* Delete table Language */
mysqli_query($link, "DROP TABLE Language");`

The above examples will output:

    Affected rows (INSERT): 984
    Affected rows (UPDATE): 168
    Affected rows (DELETE): 815
    Affected rows (SELECT): 169

### See Also

- mysqli_num_rows() - Gets the number of rows in the result set
- mysqli_info() - Retrieves information about the most recently executed query

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