Your trying to access the value of age from a page( dos.php) but you posting it to (two.php) and your missing $_POST[‘age’].
one.php
<HTML>
<BODY>
<FORM ACTION="two.php" METHOD="POST">
Age: <INPUT TYPE="text" NAME="age">
<INPUT TYPE="submit" VALUE="OK">
</FORM>
</BODY>
</HTML>
two.php
<HTML>
<BODY>
<?PHP
$age = $_POST['age'];
print ("The age is: $age");
?>
</BODY>
</HTML>
0
solved don´t recognize variable of php