# affected-rows

mysqli::\$affected_rows

mysqli_affected_rows

Gets the number of affected rows in a previous MySQL operation

# 

ENTITY

ENTITY

int

string

mysqli-ENTITYaffected_rows

ENTITY

int

string

mysqli_affected_rows

mysqli

mysql

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

# 

ENTITY

# 

ENTITY

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.

# 

ENTITY

<div class="example">

<div class="title">

`$mysqli-ENTITYaffected_rows` example

</div>

ENTITY

```
<?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");

   
```

ENTITY

```
<?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");

   
```

ENTITY

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

       

</div>

# 

ENTITY

`mysqli_num_rows`, `mysqli_info`