如何在php中输入类型范围

Question

I'm Trying to get the value of Input Type range so that I can echo the output in if else.

My HTML and PHP

  <input id="mySlider" type="range" min="1" max="6" name="rangee" step="1" value="1" onchange="resizeImage();" style="width:500px;">
    <p>Width: <span id="demo">
      <?php
        $ranger = $_POST['rangee'];

        if($ranger == "1"){
          echo "39 inches";
        }else if($ranger == "2"){
          echo "39 inches";
        }else if($ranger == "3"){
          echo "54 inches";
        }else if($ranger == "4"){
          echo "60 inches";
        }else if($ranger == "5"){
          echo "76 inches";
        }else if($ranger == "6"){
          echo "72 inches";
        }
      ?>
    </span></p>

and this is for my java. nothing to do with maybe.

  function resizeImage() {
  var image = document.getElementById('img-wrapper'),
      ranger = document.getElementById('mySlider');
  image.style.width = 200*(mySlider.value / 1)+'px';
  }

Thank you in advance