[RESOLVED] Help with IF's

[David_P]

In a form I have these two fields - file and file_new. Only one (hopefully) should contain a value. I have to determine which one has a value to determine which if statement to execute.

Below isn't working.

$file = mysql_real_escape_string($_POST['file']); 
$file_new = mysql_real_escape_string($_POST['file_new']); 

if ($file != '' AND $file_new == '') { 
run this code 
} 

if ($file == '' AND $file_new != '') { 
run this code 
} 

if ($file != '' AND $file_new != '') { 
echo "Error - only one field can be filled in.";  

} 

[NogDog]

You could do something like:

// add trim() to make sure we don't process unwanted white-space:
$file = mysql_real_escape_string(trim($_POST['file']));
$file_new = mysql_real_escape_string(trim($_POST['file_new']));
$fileFlag = 0;
$fileFlag += ($file !== '') ? 1 : 0;
$fileFlag += ($file_new !== '') ? 2 : 0;
switch($fileFlag)
{
   case 0:
      // handle case for both being empty
      break;
   case 1:
      // handle case for $file being entered
      break;
   case 2:
      // handle case for $file_new being entered
      break;
   case 3:
      // handle case if both were entered
      break;
   default:
      // something went wrong, so log some debug info or something
}

[l008com]

if ( ($var == 2) and ($tar == 3) )
     {
     echo "yeehaaaw";
     }