Actually I need to echoed the form and get the form data in the same php page or send to another php page,A pseudo code is prepared as i cannot post my original code here .
<?php echo "<html><body>";
if(isset($_POST['submit']))
{
$name = $_POST['firstname'];
echo "User Has submitted the form and entered this name : <b> $name </b>";
}
echo"<form action=$_SERVER['PHP_SELF']>
First name:<br>
<input type='text' name='firstname' value='John'><br>
Last name:<br>
<input type='text' name='lastname' value='Rambo'><br><br>
<input type='submit' value='Submit'>
</form></body></html>";
?>
The php page is call/loaded successfully loaded .The form is also working.But form action=$_SERVER['PHP_SELF'] is not working as well as the code below is also not working.
if(isset($_POST['submit']))
{
$name = $_POST['firstname'];
echo "User Has submitted the form and entered this name : <b> $name </b>";
}
This is tested code. Similar to what your want.
Change $_SERVER['PHP_SELF'] to #
<?php
error_reporting(E_ERROR );
$first = '';
$last = '';
if (intval($_POST['sub'])){
$first = $_POST['firstname'];
$last = $_POST['lastname'];
}
echo <<<EOT
<html><head></head><body>
<form action="#" method="post">
First name:<br>
<input type='text' name='firstname' value="$first"><br>
Last name:<br>
<input type='text' name='lastname' value="$last"><br><br>
<input type='submit' value='Submit'/>
<input type="hidden" name="sub" value=1/>
</form></body></html>
EOT;
?>