IN all the below examples you need to use database config file with connection string.
MySQLI database connection file
Updating all records (without parameters )
require "config.php";// Database connection file.
$query="UPDATE student SET class='Four'";
if ($connection->query($query)) {
echo "Records Updated";
}else{
echo $connection->error;
}
With number of rows updated
$query="UPDATE student SET class='Four'";
if ($connection->query($query)) {
echo "Records Updated : ";
echo $connection->affected_rows;
}else{
echo $connection->error;
}
With Parameters by using bind_param()
<?Php
require "config.php";// Database connection file.
$class='Three';
$mark=66;
$id=5;
$query="UPDATE student SET class=?,mark=? WHERE id=?";
$stmt = $connection->prepare($query);
if ($stmt) {
$stmt->bind_param('sii', $class, $mark, $id);
$stmt->execute();
echo "Record Updated:";
echo $stmt->affected_rows;
}else{
echo $connection->error;
}
?>
MySQL Update Query
Procedural style
$class='Three';
$mark=68;
$id=5;
$query="UPDATE student SET class=?,mark=? WHERE id=?";
if ($stmt = mysqli_prepare($connection,$query)){
mysqli_stmt_bind_param($stmt, "sii", $class, $mark, $id);
mysqli_stmt_execute($stmt);
echo "Record Updated:";
echo mysqli_affected_rows($connection);
}else{
echo mysqli_error($connection);
}
MySQL DUMP of student table