URL contains string then...

[rlhanson]

I'm trying to figure out how to write a php statement ...

here's a couple of url examples:

/displayimage.php?album=1&pos=0
/displayimage.php?album=1&pos=-1
/displayimage.php?album=1&pos=-2

What I want is if the "pos=0" is in the URL then I want to display:
this
If it's not, I want to display
this other thing

any suggestions?

[Dmitriy]

 switch ($_GET['pos']) {
case '0':
//do something for &pos=0
break;
 
case '1':
//do something for &pos=1
break;
 
.....
 
default:
echo 'Bad value for pos variable';
break;
} 
  

[jmarcv]

While D's structure is correct, you will of course need to use $_GET instead of $_POST if you are using an URL to pass data.