Which is quicker?

[Decode]

This;

if ( $id == "1" ) {
}
else {
     if ( $id == "2" ) {
     }
     else {
          if ( $id == "3" ) {
          }
          else {
          }
     }
} 

or this;

if ( $id == "1" ) {
}
else if ( $id == "2" ) {
}
else if ( $id == "3" ) {
}
else {
} 

Im using the 2nd one alot arround my site and i was wondering if the first way is quicker.

[Trigs]

2nd one

[Independent]

This;

if ( $id == "1" ) {
}
else {
     if ( $id == "2" ) {
     }
     else {
          if ( $id == "3" ) {
          }
          else {
          }
     }
} 

or this;

if ( $id == "1" ) {
}
else if ( $id == "2" ) {
}
else if ( $id == "3" ) {
}
else {
} 

Im using the 2nd one alot arround my site and i was wondering if the first way is quicker.

Second version, as I think if else's are slower than elseifs.

[Source]

Surely the best way would be to use switch and cases....

$id = 2;

switch ($id) {
case 1:
    echo "ID has the value of 1";
    //add query/function/echo etc...
    break;
case 2:
    echo "ID has the value of 2";
    //add query/function/echo etc...
    break;
case 3:
    echo "ID has the value of 3";
    //add query/function/echo etc...
    break;
} 

That would bring up case 2 as the number of $id is 2....

Hope that helps, seems a more logical way of doing it to me. However from the 2 that you posted, 2 wouldn't be any faster but the better way todo it.

[Jahova]

Second one, I'm sure =)

[Independent]

Second one, I'm sure =)

No, they both take the same time. Matt's solution is a lot cleaner code and faster.

Switches are a lot better than 100 else if/if else's.

[Source]

Note my user tag "$learning::php( "slowly" );" - thus meaning I am learning php slowly. So the switch option would be the best option for me personally, but I may be wrong in terms of it been better, though im 90% sure.

[Invent]

Note my user tag "$learning::php( "slowly" );" - thus meaning I am learning php slowly. So the switch option would be the best option for me personally, but I may be wrong in terms of it been better, though im 90% sure.

Meh. Sadly most of the php coders on this forum won't understand that that's valid php (your usertag).

[Source]

haha, they will all learn soon enough surely?

I love the name : "Paamayim Nekudotayim" (the :: for none php coders)

[Invent]

haha, they will all learn soon enough surely?

That's what I'm hoping for!