如何将最后插入的数据的 ID 检索到 php 中的“新页面”？

Question

I created a sign up page in PHP. When the submit button is clicked, it should show the registration No. on a NEW PAGE, (like "Your registration is successful and ur registration No. is____"). I Know how to show the last inserted ID on the same page. but how to display the same on a NEW PAGE using mysql_insert_id()?

Below is the SIGN UP PAGE..

 <?php include 'connect1.php'; if (isset($_POST['submit'])) { $name = $_POST['name']; $qual = $_POST['qual']; $dob = $_POST['dob']; $address = $_POST['address']; $number = $_POST['number']; $email = $_POST['email']; { $sql="INSERT INTO registeredparticipants (Name, DateOfBirth, Address, PhoneNumber, EmailID, Qualification)" . "VALUES ( '$name','$dob', '$address', '$number', '$email', '$qual' )"; $res=mysqli_query($con, $sql); if($res) { header('location: welcome.php'); } else { die ("Query Failed !!" . mysqli_error($con)); } }

When submit button is clicked, "welcome" page will be loaded. and i would like to display the ID of the last inserted data in "welcome" page. ID of the above table is "Reg_no." How to dispaly it on "welcome" page. ??

Thanks in advance.. :)

Answer 1

You can do it by either get | post | COOKIE | SESSION

1. header("location:new_page.php?id=".$last_inserted_id) and get from $_GET['id'] on new_page.php

2. In html form hidden format " and get it from $_POST['id'] on new_page.php

3. COOKIE

4. SESSION

Answer 2

You can put into the url you are using to redirect like header("location:new_page.php?id=".$last_insert_id) and get from $_GET['id'] on new_page.php

Hope it helps

Answer 3

There are two ways for this answer using $_GET and $_SESSION, get will show id in url if you dont want that use session for that.

$sql = "INSERT INTO ......";

if (mysqli_query($conn, $sql)) {
    $last_id = mysqli_insert_id($conn);
    $_SESSION['registration_no']=$last_id;
    header("Location:newpage.php");
} else {
    echo "Error: " . $sql . "<br>" . mysqli_error($conn);
}

in newpage.php

<?php session_start(); ?>

Your registration is successful and ur registration No. is <?php echo $_SESSION['registration_no']; ?>

i hope it will help

Answer 4

you can use session to store such value and retrieve it on any page you want like-

session_start();

//your code....
$_SESSION['reg_no'] = $last_insert_id;

than on any page you can retrieve it -

session_start();

$reg_no = $_SESSION['reg_no'];
echo "Your registration is successful and ur registration No. is ".$reg_no;