Help! "Else" "if" and "else if" are driving me nuts!

[nadz]

ok, any help is greatly appreciated at this time - im going crazy trying to figure out how to use "else" and "if " properly. id really like a script that does this:

 

first, i have a list of email is an array like so:

 

#if contacts were retreived successfully:
  if(is_array($resultarray))
{
    #the first array_shift of the result will give you the names in an array
	$names = array_shift($resultarray);
	#the second array_shift of the result will give you the emails
	$emails = array_shift($resultarray);

 

then each email id like to check if an entry already exists in my db member table, like so:

 

foreach($emails as $email) {
$q = mysql_query("SELECT * FROM user WHERE email = '$email'") or die(mysql_error());
$rows = mysql_num_rows($q) or die(mysql_error());
if($rows > 0) {
  echo 'User is already a member, just send a friend request';
}

 

with all the emails that arent already registered, id like it to continue running the script as usual which looks like this:

if (!eregi("@", $login))
			   {
			   		$login = $login . "@" . strtolower($iscript) . ".com";
			   }

                   echo '<div align="center" style="padding:5; width:350;">';
                                      echo '<form method="POST" action="'.$formaction .'" name="inviteform" id="inviteform"><table style="background-color:white; border:black solid thin;">';
                   echo '<SCRIPT LANGUAGE="JavaScript">' ."\n"
                           .'    function togglechecked(){ ' . "\n"
                           .'      for (var i = 0; i < document.inviteform.elements.length; i++) {' . "\n"
                           .'        var e = document.inviteform.elements[i];' . "\n"
                           ."        if ((e.disabled == false) && (e.name != 'allbox') && (e.type == 'checkbox')) {" ."\n"
                           .'    e.checked = document.inviteform.allbox.checked;' . "\n"
                           .'        }' . "\n"
                           .'      }' . "\n"
                           .'    }' . "\n"
                           .'    function toggleselect(){ ' . "\n"
                           .'      document.inviteform.allbox.checked = !document.inviteform.allbox.checked;' . "\n"
                           .'        togglechecked();}' . "\n"

                           .'    </SCRIPT>'  . "\n";
                   echo "<tr bgcolor=\"#FFFFFF\"><td colspan=\"3\" align=\"center\"><h1 align=\"center\">Invite Contacts</h1>$logo</td></tr>";
                   echo "<tr bgcolor=\"#CCCCCC\"><td>" . "<input type=\"checkbox\" name=\"allbox\" id=\"allbox\" value=\"nothing\" onClick=\"togglechecked()\" checked>" . '</td><td><b>Name</b></td><td><b>Email</b></td></tr>';
                   echo '<input type="hidden" name="formname" value="invite">';
                   echo "<input type=\"hidden\" name=\"sender\" value=\"$login\">";
                   echo "<input type=\"hidden\" name=\"name\" value=\"$name\">";
                   
                   $maxin = count($names);


                   for ($i=0; $i<$maxin; ++$i)
                   {
                     $emails[$i] = trim($emails[$i]);
                     if ($emails[$i]!="" && eregi("@", $emails[$i]))
                     {
          					   $emails[$i] = strtolower($emails[$i]);
                       echo "<tr><td>" . "<input type=\"checkbox\" name=\"addresses[]\" value=\"$emails[$i]\" checked>" . "</td><td>$names[$i]</td><td>$emails[$i]</td></tr>";
                     }
                   }

}
                   echo <<< _end_this
               <tr>
               <tr><td><input type="checkbox" name="allbox2" value="nothing" onClick="toggleselect()" checked></td><td><a href="javascript:toggleselect()">Select/Deselect All</a></td><td></td></tr>

             <td colspan="3" style="padding:4"><input name="submit" type="submit" value="Invite Selected" style="width:100%"></td>
           </tr>
          </table></form>
</div>
_end_this;
}
  else #else print out the form with the error message
  {
    switch ($resultarray)
    {
      case 1: #invalid login
        $formdisclaimer = "<br><b style=\"color:red\">Invalid Login</b><br>";
        break;
      case 2: #empty username or password
        $formdisclaimer = "<br><b style=\"color:red\">Enter Your Username and Password</b><br>";
        break;
    }
  	include("form.php");
  }
}
else if ($_POST['formname'] == "invite")
{
  $message = file_get_contents($basedir . $slash . "email.html");
  $subject = file_get_contents($basedir . $slash . "emailsubject.txt");


  $addressesStr = implode(",", $_POST['addresses']);

  $headers = "";
  
  if ($fromfield && $fromfield!="")
  {
    $from = $fromfield;
  }
  else
  {
  $from = trim($_POST['name']) . " <" . trim($_POST['sender']) . ">";
  	$headers .= "From: $from\are\n";
  }
  
  $headers .= "Bcc: $addressesStr" . "\are\n";

  $message = str_replace("[[[sender]]]", $_POST['name'], $message);
  $subject = str_replace("[[[sender]]]", $_POST['name'], $subject);

  $headers .= "MIME-Version: 1.0\are\n" .
         "Content-Type: text/html;\are\n";
  
	if(mail ($tofield, $subject, "\are\n". $message, $headers))
	  $msg = "Done!";
	else
	  $msg = "Error occured";

echo <<< _end_sent
<style type="text/css">
<!--
.formheading
{
color:black;
font-size:24px;
font-family:Arial, sans-serif;
font-weight:bolder;
}
.scriptlinks a
{
color:blue;
  text-decoration:none;
}

-->
</style> 
  <div style="padding:5; background-color: #EEEEEE; width:350;">
  <div style="width:340; border: black thin solid; background-color:white;" align="center"><h1>$msg</h1>
<p>Your friends have been invited. <a href="/">Click here</a> to login </p><br><br><br></div>
</div> 	
_end_sent;

}

?>

 

 

[MasterACE14]

I'm a New/n00b coder myself, and I'll try and explain what the statements mean exactly. *grabs PHP text book*

 

the "if" statement practically means, if a requirement is met, your block of coding will execute.

 

the "else" statement practically means, if a requirement isn't met and your coding can't be done , else use the other code(in the curly braces of the else statement)

 

Format of the Statements(in General)

if statement

if ( test-expression ) statement-to-execute-when-true ;

if else statement

if ( test-expression ) do-this ; else do-this ;

 

Examples

if statement

 

if ( 10 == 10 ) {  //Meaning, if 10 is equal to 10 (which is true in this example)

print 1 + 1;    //if 10 == 10 is true (meaning 10 really does equal 10) it will execute the code in the curly

}                      //braces

 

 

if else statement

 

if ( 10 == 11 ) {  //Meaning, if 10 is equal to 11 (which is false in this example)

print 1 + 1;  // if 10 == 11 is true it will execute the code under the if statement(in the curly braces)

}

else

if ( 11 == 11 ) { //Meaning if 11 is equal to 11 (which is true in the else part of the statement but false in

print 2 + 2;     //the above if statement)

}                          // it will execute the code in this if statement(in the curly braces)

 

 

and as for your coding, I'm not completely sure lol. But that should help you

 

I hope this helps, that was my 3rd PHP lesson lol, 

 

I just realised its alittle muddled up, sorry about that. but I think its still understandable.

 

ACE