Form is not working when used with if(isset($_POST("sunmit")))
<p>My form is not working when used with 
<code>if(isset($_POST("sunmit")))</code></p>

<pre><code>    &lt;form name="form"  onsubmit="return chkEntry()"  action="#" enctype="multipart/form-data"  method="post"&gt;
                            &lt;fieldset&gt;          
            &lt;label for="email"&gt;Email:&lt;/label&gt;
        &lt;input type="email" id="email" name="ema" /&gt;            
        &lt;label for="message"&gt;Message:&lt;/label&gt;
   &lt;textarea id="message" name="comment"&gt;&lt;/textarea&gt;
       &lt;input type="text"  style="visibility:hidden" name="tut" value="&lt;?php echo $tu?&gt; "/&gt;
      &lt;input type="text"  style="visibility:hidden" name="file" value="&lt;?php echo $fi?&gt; "/&gt;
  &lt;input type="submit" name="enter" value="Submit" align="right"/&gt;&lt;/p&gt; &lt;/div&gt;
                             &lt;/fieldset&gt;       

                            &lt;/form&gt;
</code></pre>
