Object oriented style
Procedural style
Returns the number of rows affected by INSERT, UPDATE, or DELETE query.
This function only works with queries which update a table. In order to get the number of rows from a SELECT query, use mysqli_stmt_num_rows() instead.
Procedural style only: A statement identifier returned by mysqli_stmt_init().
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. NULL indicates an invalid argument was supplied to the function.
Note:
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.
<?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(); ?>
<?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); ?>
The above examples will output:
rows inserted: 17
Please login to continue.