Simple function

[jimjimalabim]

Ok people I'm trying to write a simple function that will pass a blank string back to my form when the clear button is clicked, but for some reason it will not clear my form. I can't figure this out I have written other functions that have worked, but for some reason this has me stumped.  Here is my function

  //function to clear variables
  function clearVars(&$j, &$k) {
    $workValue = ""; 
    $workType = ""; 
    }

 

  $workValue = (isset($_POST['vfld']))?$_POST['vfld']:'';
  $workType = (isset($_POST['tfld']))?$_POST['tfld']:'';
  if (isset($_POST['submit'])) {
  if ($_POST['submit'] == "Clear") {
    clearVars($vfld,$tfld);
  } elseif ($_POST['submit'] == "Calculate") {
    getVars($vfld,$tfld,$calc);
    $continue = testVars();
    if ($continue == "yes") {
      switch ($workType) {
      case "circle":
        calcCircle($workValue);
        break;
      case "square":
        calcSquare($workValue);
        break;
      case "triangle":
        calcTriangle($workValue);
        break;
      }
   }
  }
}
?>

<form method="post" action="hw06.php"
   id="form1" name="form1">
  <p>
  Enter a number here :
  <input type="text" id="vfld" name="vfld"
  value="<?php echo $workValue; ?>"/>
  </p>
  <p>
  This number is:
  <br />
  <input type="radio" name="tfld" value="circle"
  <?php if ($workType == "circle") {
    echo 'checked="checked"'; } ?> />
  : the radius of a circle
  <br />
  <input type="radio" name="tfld" value="square"
  <?php if ($workType == "square") {
    echo 'checked="checked"'; } ?> />
  : the length of one side of a square
  <br />
  <input type="radio" name="tfld" value="triangle"
  <?php if ($workType == "triangle") {
    echo 'checked="checked"'; } ?> />
  : the length of one side of an equilateral triangle
  </p>
  <p>
  <input type="submit" name="submit" value="Calculate" />
  <input type="submit" name="submit" value="Clear" />
  </p>
</form>

<div id="footer">
<pre>This page written by: <cite>The President</cite> ©2011 and beyond</pre>
</div>

</body>

</html>

[btherl]

clearVars() takes $j and $k as arguments, but it then modifies $workValue and $workType.  Did you mean to have it take $workValue and $workType as arguments?

 

Another alternative is to simply not set $workValue and $workType in the first place when $_POST['submit'] == "Clear".  Then you don't need to call a function to clear them.  Yet another option is to do the clearing in javascript.

[jimjimalabim]

I know I could not set them, but I'm trying to write a function that will not set, or set them to blank.

[Mahngiel]

couldn't you just use a reset button?

<input type="reset" value="reset">