How to post iframe value in php.
Example: Username.php
<form action='data.php' method='post'> <input type='text' name='username' id='username'> <iframe src='password.php'></iframe> <input type='submit'> </form> Password.php
<input type='text' name='password' id='passwprd'> I want to post password and username value to data.php
You can do it without session or cookie but with pure javascript.Give your iframe an id.
<iframe id='iframePassword' src='password.php'></iframe> You can grab username with this
var username = document.getElementById('username').value; You can access the password field inside the iframe with this.
var ifr = document.getElementById('iframePassword'); var password = ifr.contentWindow.document.getElementById('passwprd').value; Now make an ajax call with username and password.
try this,
<form action='data.php' method='post'> <input type='text' name='username' id='username'> <iframe id="iframe_pass" src='password.php'> </iframe> <input id="submit" type='button' value="submit"> </form> <p id="password_from_frame"></p> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script> <script> $("#submit").on('click', function(){ var pass_field = $("#iframe_pass").contents().find("#password"); var username = $("#username"); var data = {username : username.val(), password : pass_field.val()}; // make an ajax call to submit form $.ajax({ url : "data.php", type : "POST", data : data, success : function(data) { console.log(data); alert(data); }, error : function() { } }); }); // you can use keyup, keydown, focusout, keypress event $("#iframe_pass").contents().find("#password").on('keyup', function(){ $("#password_from_frame").html($(this).val()); }); </script> and password.php
<input type='text' name='password' id='password'> and on the data.php use the print_r to send back the value to the ajax request
print_r($_POST); 
If I understood your question correctly, you can store the username and password in PHP session variables and then you can fetch that data from session variables in data.php. As you have two values, its better to store them in an array and then assign the array to the session.
