PHP : Function Reference : MySQL Improved Extension : mysqli_affected

Example 1468. 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();

}

/* 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);

$result->close();

/* Delete table Language */
$mysqli->query("DROP TABLE Language");

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

Example 1469. Procedural style

copy to clipboard

<?php

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


if (!$link) {

    printf("Can't connect to localhost. Error: %s\n", mysqli_connect_error());

    exit();

}

/* 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));

mysqli_free_result($result);

/* Delete table Language */
mysqli_query($link, "DROP TABLE Language");

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

Code Examples / Notes » mysqli_affected_rows

mysqli_affected_rows will return 0 if you run a UPDATE command with the same variables that already exist Here is a example db row from 'test' table ---------- id = 1 name = test mysqli_query($db,"UPDATE `test` SET `name`='test' WHERE `id`='1'"); $i=mysqli_affected_rows($db); $i Will Be Zero Or False

Just to clarify about the possible return values in this Manual those not familiar with PHP and MySQL. "-1 indicates that the query returned an error." -1 will be returned if the query itself can not be issued to the server, possibly because of syntax error AND if the last query was not either an Insert or Update statement.

mysqli_affected_rows

Gets the number of affected rows in a previous MySQL operation (PHP 5)
int mysqli_affected_rows ( mysqli link )

Example 1468. Object oriented style

Example 1469. Procedural style

Code Examples / Notes » mysqli_affected_rows

Change Language

mysqli_affected_rows

Gets the number of affected rows in a previous MySQL operation (PHP 5) int mysqli_affected_rows ( mysqli link )

Example 1468. Object oriented style

Example 1469. Procedural style

Code Examples / Notes » mysqli_affected_rows

Change Language

Gets the number of affected rows in a previous MySQL operation (PHP 5)
int mysqli_affected_rows ( mysqli link )