Only Form Validation on My Own Form, NOT WORKING!

<?php 
if (isset($_POST["buttonSendEmail"]))  {
  $WAFV_Redirect = "";
  $_SESSION['WAVT_index_Errors'] = "";
  if ($WAFV_Redirect == "")  {
    $WAFV_Redirect = $_SERVER["PHP_SELF"];
  }
  $WAFV_Errors = "";
  $WAFV_Errors .= WAValidateEM(((isset($_POST["email"]))?$_POST["email"]:"") . "",true,1);
  $WAFV_Errors .= WAValidateRX(((isset($_POST["firstRow"]))?$_POST["firstRow"]:"") . "","/\s*/i",false,2);
  $WAFV_Errors .= WAValidateRX(((isset($_POST["lastRow"]))?$_POST["lastRow"]:"") . "","/\s*/i",false,3);
  $WAFV_Errors .= WAValidateLE($totalRows_email . "",0 . "",true,4);

  if ($WAFV_Errors != "")  {
    PostResult($WAFV_Redirect,$WAFV_Errors,"index");
  }
}
?>

<form id="formGetEmail" name="formGetEmail" method="post" action="">
  <div align="center">
    <p>Trag Dich ein und wir sagen Dir wann's los geht!</p>
    <p>
      <input name="firstRow" type="text" id="firstRow" style="display:none" value="c" />
      Hier Deine Email-Adresse eintragen:
      <input name="email" type="text" id="email" value="<?php echo(ValidatedField("index","email")) ?>" size="50" maxlength="100" />
      <input type="submit" name="buttonSendEmail" id="buttonSendEmail" value="Eintragen und warten!" />
      <input name="lastRow" type="text" id="lastRow" style="display:none" value="c" />
    </p>
    <?php
if (ValidatedField('index','index'))  {
  if ((strpos((",".ValidatedField("index","index").","), "," . "1" . ",") !== false || "1" == ""))  {
    if (!(false))  {
?>
      <p>Bitte gib eine korrekte Email-Adresse ein!</p>
      <?php //WAFV_Conditional index.php index(1:)
    }
  }
}?>
    <?php
if (ValidatedField('index','index'))  {
  if ((strpos((",".ValidatedField("index","index").","), "," . "4" . ",") !== false || "4" == ""))  {
    if (!((strpos((",".ValidatedField("index","index").","), "," . "1" . ",") !== false || "1" == "")))  {
?>
      <p>Die Email-Adresse ist schon eingetragen!</p>
      <?php //WAFV_Conditional index.php index(4:1)
    }
  }
}
?>

  </div>
</form>