<form action="form.php" method="POST">
          <div class="form-group">
            <input type="text" name="name" id="name" class="form-control" placeholder="Name">
          </div>

          <div class="form-group">
          <input type="email" name="email" id="email" class="form-control" placeholder="Email">
          </div>

          <button class="btn btn-primary" type="submit">Submit</button>
</form>

Add this on to your website footer

  <script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>

The back end part

<?php
	$form_data = array();

	$form_data['name'] = $_POST['name'];
	$form_data['email'] = $_POST['email'];

	echo json_encode($form_data);
?>

This is the form submit through javascript with query ajax part

<script>
  $(document).ready(function() {
    $('form').submit(function(e) {
      e.preventDefault();
      var values = $(this).serialize();
      $.ajax({
        url: "form.php",
        type: "post",
        data: values ,
        success: function (res) {
          alert('Form submitted successfully...')
          console.log(res)
        },
        error: function(xhr, status, error) {
          console.log(xhr.responseText);
        }
      });
     //send second form request
    $.ajax({
      url: "form2.php",
      type: "post",
      data: values ,
      success: function (res) {
        alert('Form submitted successfully...')
        console.log(res)
      },
      error: function(xhr, status, error) {
        console.log(xhr.responseText);
      }
    });
    })
  });
</script>

Machan meka karanna puluwan JavaScript ajax request ekakin.

<form action= "page_one.php" method=post> kiyala thibbama oya form ekata insert karana data tika yanne page_one.php kiyana ekatane. mata ekatath yawanna one thawa page_two.php kiyana page ekatath yawanna one.
hariyata meh wage,
<form action= "page_one.php" && "page_two.php"method=post> (meka waradi neh)
mata oka kara ganna thama one.
Real word example ekak widiyata meka hithannako,
form ekakata user, userge details add karanawa(name and email), e add karana details crud ekakin admin ta yanwa. e ekkama page eka redirect wenawa "thank you" (thankyou.php) page ekakata. e page eke thiyenawa ""Thank you, ________(userge name eka)". mata anna eka thama hada ganna one. mn dakka google eke thiyenwa js walin oka karana widiyak eth eka math hariyata therune nah.

code eke ona tika witharak danna

ඔයා මෙහෙම කරන්න. Google එකට ගිහින් crud operations in php කියලා සර්ච් කරන්න. නැත්තම් https://www.tutorialrepublic.com/php-tutorial/php-mysql-crud-application.php ඔය ලින්ක් එකට ගිහින් බලන්න. එතකොට ඔයාට idea එකක් එයි. ඒකෙත් ඔයාගේ ප්‍රශ්නයට අදාල වෙන කොටස තියෙන්නේ Creating the Read Page කියන කොටසේ.