Warp script isnt working.

[fowlplay4]

Well, quick glance over:

if (player.chat = "Testdestination") {

=, is an assignment i.e: a = 1;
==, is a comparison. i.e: player.chat == "yes!";

You should be doing comparisons in if statements.

Also I would recommend just setting:

client.destination = "Test destination";

Instead of setting actual level coordinates that could easily be changed with a memory editor, then on the serverside you'd have to a simple check.

PHP Code:

function onActionServerSide() {
  if (params[0] == "arrive") {
    // Determine coordinates from the destination
    if (client.destination == "Test destination") {
      temp.coordinates = {"onlinestartlocal.nw", 30, 30};
    }
    else if (client.destination == "some other place") {
      temp.coordinates = {"onlinestartlocal.nw", 30, 30};
    }
    // Make sure coordinates were set.
    if (temp.coordinates != NULL) {
      // Warp player
      player.setlevel2(temp.coordinates[0], temp.coordinates[1], temp.coordinates[2]);
    }
  }
} 


But that was assuming you were using it in a weapon npc, oh well.