Question

i just want to know from below code what does ? and : specify, i would appreciate if someone explain me the below code. thank you

$country = empty($_POST['country']) ? die ("ERROR: Enter a country") : mysql_escape_string($_POST['country']); 

Answer 1

It is called ternary operator and is simply shorthand of this code:

if (empty($_POST['country']))
{
  die ("ERROR: Enter a country");
}
else
{
  $country = mysql_escape_string($_POST['country']);
}

Syntax:

condition ? used if true : used if false;

Or you can do assignments:

variable = condition ? used if true : used if false;

More Info:

http://www.tuxradar.com/practicalphp/3/12/4