Switch Case Image Maps

jameseymour

Seems my switch case statement isn't working, and I can't see why it isn't.

The App: The webapp I am making is a webpage that uses imagemaps as a menu system. The menu is basically a table with 6 columns and 5 rows. Each row is a seperate image. When a cell of the "table" is clicked, the options under that tables category are displayed as pictures. I did this by passing a variable and reloading the page when a hotspot on the image map is clicked. When the page reloads a switch case is used to display either a row with a cell selected, or the default unselected row.

Below is the select case that will not work properly. The Map functions all work (they have been tested) and pass the variable.

$select=$_GET["select"];
Main();
print $select;  //Temp to see if variable passing is correct

function Main()
{
    PageHeader();  //html tags
    switch ($select) 
    {
      case plannerWhat:
          PlannerViewWhatMap();
          break;
      case plannerHow:
          PlannerViewHowMap();
          break;
      case plannerWhere:
          PlannerViewWhereMap();
          break;
      case plannerWho:
          PlannerViewWhoMap();
          break;
      case plannerWhen:
          PlannerViewWhenMap();
          break;
      case plannerWhy:
          PlannerViewWhyMap();
          break;
      default:
          PlannerViewDefaultMap();
          break;
    } 

PageFooter();  //html tags
}

Sample of how the variable is passed. And there is a backslash before the quotes infront of rect, for some reason this forum won't show it.

<area shape=\"rect\" coords=\"467,0,539,72\" href=\"http://Link.php?select=plannerWhy\" alt=\"Why\">

Any help would be great.

Rodney_H_

I think, in your switch, each case need to be in quotes, as the cases are strings. Example:

	switch ($select) 
    {
      case 'plannerWhat':
          PlannerViewWhatMap();
          break;
      case 'plannerHow':
          PlannerViewHowMap();
          break;
      case 'plannerWhere':
          PlannerViewWhereMap();
          break;
      case 'plannerWho':
          PlannerViewWhoMap();
          break;
      case 'plannerWhen':
          PlannerViewWhenMap();
          break;
      case 'plannerWhy':
          PlannerViewWhyMap();
          break;
      default:
          PlannerViewDefaultMap();
          break;
    }

Also, it appears that you are missing a closing curly brace at the end of the function definition of "function Main()".

I hope that helps.

PS. What do the functions like "PlannerViewWhatMap();" and "PageHeader(); " look like??

jameseymour

If you scroll down in php code window you with see the } to end main().

I tried putting the cases in quotes and double quotes and they still do not work, it just displays the default no matter what. I will include the function code you asked about below:

Page header is simply,

function PageHeader()
{
    print"
    <html>
    <head>
    <title>Visual Depiction of the OPS Enterprise Architecture Framework</title>
    </head>
    <body>
    ";
}

This is the default row. All it does is displays an image and maps the hotspots for that image. The hotspots have the variable in the link to be passed.

function PlannerViewDefaultMap()
{
    print"
      <img name=\"plannerViewDefault0\" src=\"plannerViewDefault.jpg\" width=\"541\" height=\"73\" border=\"0\" usemap=\"#plannerViewDefault\" /><br />

  <map name=\"plannerViewDefault\">
  <area shape=\"rect\" coords=\"109,0,182,72\" href=\"http://link/VisualDepiction.php?select=plannerWhat\" alt=\"What\">
  <area shape=\"rect\" coords=\"182,0,253,72\" href=\"http://link/VisualDepiction.php?select=plannerHow\" alt=\"How\">
  <area shape=\"rect\" coords=\"253,0,325,72\" href=\"http://link/VisualDepiction.php?select=plannerWhere\" alt=\"Where\">
  <area shape=\"rect\" coords=\"323,0,397,72\" href=\"http://link/VisualDepiction.php?select=plannerWho\" alt=\"Who\">
  <area shape=\"rect\" coords=\"397,0,468,72\" href=\"http://link/VisualDepiction.php?select=plannerWhen\" alt=\"When\">
  <area shape=\"rect\" coords=\"467,0,539,72\" href=\"http://link/VisualDepiction.php?select=plannerWhy\" alt=\"Why\">
  </map>
";
}

Rodney_H_

Sorry about that.

Hmmm... try this:

<?php
// define function
function Main()
{    

    // call function for html tags
    PageHeader();

// if set assign value to variable
if(isset($_GET['select'])){
	$select = $_GET['select'];
} else {
	$select = 'default';
}

switch ($select) {
  case 'plannerWhat':
         PlannerViewWhatMap();
         break;
  case 'plannerHow':
         PlannerViewHowMap();
         break;
  case 'plannerWhere':
         PlannerViewWhereMap();
         break;
  case 'plannerWho':
         PlannerViewWhoMap();
         break;
  case 'plannerWhen':
         PlannerViewWhenMap();
         break;
  case 'plannerWhy':
         PlannerViewWhyMap();
         break;
  default:
         PlannerViewDefaultMap();
         break;
}
}

// call function
Main();
?>

jameseymour

There we go, worked like a charm. Thanks for the help.