What common mistake did the user make when trying to implement a delete function in PHP?

The common mistake the user made when trying to implement a delete function in PHP is not passing the correct parameter to the SQL query. When deleting a record from a database, you need to specify the unique identifier of the record you want to delete. In this case, the user likely forgot to pass the ID of the record they want to delete to the SQL query. To fix this issue, make sure to pass the ID of the record you want to delete to the SQL query. This can be done by either including the ID in the SQL query directly or using prepared statements to bind the ID parameter securely. 

// Assuming $id contains the ID of the record to be deleted
$id = $_POST['id'];

// Connect to the database
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Prepare and bind SQL statement with parameter
$stmt = $conn->prepare("DELETE FROM table_name WHERE id = ?");
$stmt->bind_param("i", $id);

// Execute the statement
$stmt->execute();

// Close the statement and connection
$stmt->close();
$conn->close();

Related Questions