Omitting $variables from equations

phplearner

I thought I had things working until I discovered that if one field has no data (which is possible), that:

In the final $maplink equation, I need to eliminate the "+" sign right-before &zip IF $suffix is blank:

http://www.mapquest.com/maps/map.adp?country=us&city=Boom_City&state=NV&address=123+Via_Del_Playa+&zip=99999&zoom=8

In the final $propaddr equation, if $suffix is blank, to NOT include what now would be a " " right after $street

I've included comments (below) about the problem.

Thanks for any help in resolving these issues.

<?
?>
<HTML>
<HEAD><TITLE>MapLink & PropAddr NO SUFFIX Code Test</TITLE>
</HEAD>
<BODY>

$addrnum="123";
$street="Via Del Playa";

// $suffix MAY be omitted or blank!!! What to do below???
$suffix="";

$propaddr="$addrnum $street $suffix";
// If $suffix is blank, how NOT to include in $propaddr???
echo "<br>";
echo "$propaddr";
$city="Boom City";
$state="NV";
echo "<br>";
$zip="99999";
$maplink="http://www.mapquest.com/maps/map.adp?country=us&city=$city&state=$state&address=$addrnum+$street+$suffix&zip=$zip&zoom=8";
$maplink = str_replace(" ", "_", $maplink);
//if $suffix is blank, how NOT to include the "+" RIGHT-BEFORE "&zip" in the above???

echo "$maplink";

</body>
</html>

<?
?>

lymfnode

I think that if you just put a few if-else statements in there checking for whether or not one of the fields exists, it should work out. For example:

<?php

  var $food;

  $field_1 = "Cheese";
  $field_2 = "Cowpie";

  // Optional

  $field_3 = "";

  if($field_3 == NULL) {
    $food = "One part " . $field_1 . ", and one part " . $field_2 . "!";
  } else if($field_3 != NULL) {
    $food = "One part " . $field_1 . ", one part " . $field_2 . " and one part " . $field_3 . "!";
  }

  echo $food;

?>