Connect the database - php

Question

I try to do the booking form and in the PHP I type the $stmt->bind_param part come out syntax error. However, I don't know where I did wrong. Here is my phpMyAdmin setting phpmyadmin table structure:
. Below is my code:
$conn = mysqli_connect($servername, $username, $password,$database);
// Check connection
if($conn->connect_error){
die("Connection Failed : ". $conn->connect_error);
} else {
$stmt = $conn->prepare("insert into event_and_inquiry_form (Name,Mail,Phone_Number,Date,Propose,Person,Theme,Event_Package,Remarks)VALUES (Name, Mail, Phone_Number,Date,Propose,Person,Theme,Event_Package,Remarks);
$stmt->bind_param("sssisisss", $Name,$Mail,$Phone_Number,$Date,$Propose,$Person,$Theme,$Event_Package,$Remarks);
$execval = $stmt->execute();
echo $execval;
$stmt
$stmt->close();
$conn->close();
}

Answer 1

You do happen to have a few issues.
When you prepare your mysqli statement the values to be inserted are to be held by a question mark ?. I believe you can hold them with :name :secondname as well but that's a story for another question.
You have not closed your quotes or bracket on the prepare function.
You have a random $stmt variable at the end of your script.
I corrected your code with what I noticed and posted it below:
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$conn = mysqli_connect($servername, $username, $password,$database);
$stmt = $conn->prepare("INSERT INTO `event_and_inquiry_form`
(`Name`,`Mail`,`Phone_Number`,`Date`,`Propose`,`Person`,`Theme`,`Event_Package`,`Remarks`)
VALUES
( ? , ? , ? , ? , ? , ? , ? , ? , ?)");
$stmt->bind_param("sssisisss", $Name,$Mail,$Phone_Number,$Date,$Propose,$Person,$Theme,$Event_Package,$Remarks);
$execval = $stmt->execute();
$stmt->close();
$conn->close();

Answer 2

It seems you're getting confused between mysqli and PDO - although there are syntax issues either way!
mysqli
With mysqli the short answer is that you need to replace all of the variables in VALUES( ... ) with ?.
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT); // Enable error reporting
$mysqli = new mysqli($servername, $username, $password, $database); // Create connection to database
$sql = "
INSERT INTO event_and_inquiry_form
(Name,Mail,Phone_Number,Date,Propose,Person,Theme,Event_Package,Remarks)
VALUES (?,?,?,?,?,?,?,?,?)
";
$query = $mysqli->prepare($sql);
$query->bind_param("sssisisss", $Name, $Mail, $Phone_Number, $Date, $Propose, $Person, $Theme, $Event_Package, $Remarks);
$query->execute();
PDO
You can do it the same way in PDO.
Of course the connection method is different and we'll pass an array of the values to the execute function instead.
// Connect to the database
$pdo = new pdo(
"mysql:host={$servername};dbname={$database}",
$username,
$password,
[
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_EMULATE_PREPARES => FALSE
]
);
$sql = "
INSERT INTO event_and_inquiry_form
(Name,Mail,Phone_Number,Date,Propose,Person,Theme,Event_Package,Remarks)
VALUES (?,?,?,?,?,?,?,?,?)";
$query = $pdo->prepare($sql);
$query->execute([$Name, $Mail, $Phone_Number, $Date, $Propose, $Person, $Theme, $Event_Package, $Remarks]);
Finally, in some cases you may prefer to name your placeholders. In this case the name will be :some_name and the array will need to be associative ["some_name"=> "Some value"].
// Connect to the database
$pdo = new pdo(
"mysql:host={$servername};dbname={$database}",
$username,
$password,
[
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_EMULATE_PREPARES => FALSE
]
);
$sql = "
INSERT INTO event_and_inquiry_form
(Name,Mail,Phone_Number,Date,Propose,Person,Theme,Event_Package,Remarks)
VALUES
(:name, :mail, :phone_number, :date, :propose, :person, :theme, :event_package, :remarks)";
$query = $pdo->prepare($sql);
$query->execute([
"name" => $Name
"mail" => $Mail
"phone_number" => $Phone_Number
"date" => $Date
"propose" => $Propose
"person" => $Person
"theme" => $Theme
"event_package" => $Event_Package
"remarks" => $Remarks
]);