<form method="post">
    text(t): <input type="text" name="t1" value="1"><br>
    number(n): <input type="number" name="n" value="1"><br>
    <input type="checkbox" name="c"> checkbox(c)<br>
    <input type="radio" name="r"> radio 1(r1)
    <input type="radio" name="r"> radio 2(r2)
    <input type="radio" name="r"> radio 3(r3)
    <input type="radio" name="r"> radio 4(r4)
    <br>
    textarea<br>
    <textarea name="a"></textarea>
    <br>
    select<br>
    <select name="s">
      <option value="1">1</option>
      <option value="2">2</option>
      <option value="3">3</option>
    </select>
    <br>
    <input type="submit" value="OK">
</form>
<hr>
<span style="font-size: 32px; margin: 100px;">
<?php
    if ($_POST)
    {
        $t1=$_POST['t1'];
        echo "text:".$t1."<br>";
        $n=$_POST['n'];
        echo "number:".$n."<br>";
        if (!empty($_POST['c']))
          echo "check tak<br>";
        else
          echo "check nie<br>";
        $a=$_POST['a'];
        $s=$_POST['s'];
        echo "a:".$a."<br>";
        echo "s:".$s."<br>";
    }
?>
</span>