trouble with this email code

[pioneerx01]

Hi,

 

I have this email code working for me:

 

$headers1 = "From: my@email.com\r\n"; 
$headers1 .= "BCC: other@email.com\r\n";
$to1 = $_GET['e1'].", ". $_GET['e2'].", ". $_GET['e3'].", ". $_GET['e4'];
mail($to1, " my subject line", " my message here ", $headers1);

 

In the forms users can submit up to 4 independent email addresses (but are not required to do so) in any combination. This email from works only if email address 1 and 4 are entered. Other can be entered too, but if 1 and 4 are not there email does not go out. I sort of understand why, but I can not figure out a way around it and I do not want to split to 4 independent email codes. 

 

Any help on this one?

Thanks

[taquitosensei]

try this

for($a=1;$a<=4; $a++)
{
$glue=($a>0)?", ":""; 
$to1.=($_GET['e'.$a]!='')?$glue.$_GET['e'.$a]:""; 
}

[pioneerx01]

I see what you did there, but it did not really work for me.

[taquitosensei]

It's probably because I put $a>0  and it should be 1

for($a=1;$a<=4; $a++)
{
$glue=($a>1)?", ":""; 
$to1.=($_GET['e'.$a]!='')?$glue.$_GET['e'.$a]:""; 
}