Delete row(s) with respect to username [duplicate] - php

Question

This question already has answers here:
delete using where and or
(4 answers)
Closed 4 years ago.
i've gone through most of the questions similar to this but none addressed my problem.
i have table with four columns : id,username,title and date. i want to delete the entire row(s) associated with a specific username when the user clicks a button (anchor tag). pls, how do i achieve this? heres the code i tried.
php
<?php
session_start();
$uname = $_SESSION['username'];
$dbconn = mysqli_connect('localhost','root','','notesdb');
if(!$dbconn){
die("Connection failed:". mysqli_connect_error($dbconn));
}
if($stmt = $dbconn->prepare("DELETE * FROM notes_log where username = ? ")){
$stmt->bind_param("s",$uname);
$stmt->execute();
$stmt->close();
}else{
echo "ERROR: could not prepare SQL statement.";
}
mysqli_close();
// redirect user after delete is successful
header("Location: index.php");
?>
HTML
Delete all
The above code redirected the page but nothing was deleted.

Answer 1

Get rid of the * in the query. The syntax is just:
DELETE FROM notes_log where username = ?
See DELETE Syntax.
In a multi-table DELETE you need to put the table names after DELETE, but a single-table DELETE should have nothing there.
And when an SQL operation fails, you should print the SQL error message, not just could not prepare SQL statement, e.g.
echo "ERROR: could not prepare SQL statement: " . $dbconn->error;
Edit: mysqli_close() requires a database connection as its only argument.
Ref: http://php.net/manual/en/mysqli.close.php
You will need to use mysqli_close($dbconn).