eregi echo problem

[spillage]

I have this code for checking emails in form and it all works well except for one thing as soon as the php page is opened the form is empty as it should be so I get the first message displayed. New to coding and scratching my head trying to work out how to stop this happening. Would be nice to echo some welcome text first.

   if (!eregi('^[[:alnum:]][a-z0-9_\.\-]*@[a-z0-9\.\-]+\.[a-z]{2,4}$',
            stripslashes(trim($friend))))
            {
			echo "<p>Please enter your friends valid email below:";
			echo '</br>';
		}

    else

           {
   	           echo "<p>Thank you</p>";
               echo "<p>Your email has been submitted</p>";
           echo "<p>Please submit another email or close your browser.</p></br>";
           fwrite ($fp,$output, strlen($output));
               fclose($fp);
           }

?>

 

Thanks

 

Spill

[conker87]

<?php

if ($_POST['submit_button'])
{
//add your stuff here
} ?>

[spillage]

Either ive added the extra code in the wrong place of somthing isnt right. I have also put it at the very start of the code.

It seems to wipe out any echos within the{} and will not write anythign to the file. the value of the submit button is "send_friend".

 

Thanks

 

<?php

session_start();
if (isset($_POST['email'])) {
  $_SESSION['email']=$_POST['email'];
}
$cust = $_SESSION['email'];
$DOCUMENT_ROOT=$_SERVER['DOCUMENT_ROOT'];
$friend=$_POST["address"];
$output= $cust."\t".$friend."\r\n";
@ $fp= fopen ("$DOCUMENT_ROOT/rcfriend.txt",'a+');


      echo "Your email is: ".$cust.'</br>';

if ($_POST["send_friend"])
{
   if (!eregi('^[[:alnum:]][a-z0-9_\.\-]*@[a-z0-9\.\-]+\.[a-z]{2,4}$',
            stripslashes(trim($friend))))
            {
			echo "<p>Please enter your friends valid email below:";
			echo '</br>';
		}

    else

           {
   	           echo "<p>Thank you</p>";
               echo "<p>Your email has been submitted</p>";
           echo "<p>Please submit another email or close your browser.</p></br>";
           fwrite ($fp,$output, strlen($output));
               fclose($fp);
           }
}
?>