title: If and elseif's not working
body: <p>Sorry for the messy code but basically this code will only ever make <code>$booktype = "ICT"</code> and if I remove the "else" from elseif, it makes it equal <code>ENGLISH</code>.</p>
  
  <p>Whats going wrong?</p>
  
  <p>I've echoed POST_ Book room and that comes out fine.   </p>
  
  <pre><code>if ($_POST['bookroom'] == "142" || "040" || "139"|| "104") {
      $booktype = "ICT";
  } elseif ($_POST['bookroom'] == "015" || "016" || "017" || "018" || "027" || "028") {
      $booktype = "MATHS";
  } elseif ($_POST['bookroom'] == "E03") {
      $booktype = "MUSIC";
  } elseif ($_POST['bookroom'] == "202" || "204" || "205" || "206" || "207") {
      $booktype = "ENGLISH";
  }
  </code></pre>