[juneau-lug] X10 PHP script

X10 is an electrical control system for home automation.  You plug your 
light or whatever into an x10 switch box and control it by modulating a 
signal on your house wiring.  One linux program that interfaces to a 
controller is called BottleRocket (br is the executable).  So from the 
command line you say something like: "br A10 on"  or "br A16 off".  Next 
I wanted a web page that would issue the commands, but it was too big 
for my web enabled cell phone.  So it got shortened and the following is 
the tiny working version of the script that my mobile phone can use to 
switch electrical devices on and off in my home.

<?php

$thisfile = $_SERVER['PHP_SELF']; //Have to set this for heredoc

$A_form = <<< EOFORMA

<FORM METHOD="post" ACTION="$thisfile">

<SELECT name="codeA">

  <option value="1">1</option>

  <option value="2">2</option>

  <option value="3">3</option>

  <option value="4">4</option>

  <option value="5">5</option>

  <option value="6">6</option>

  <option value="7">7</option>

  <option value="8">8</option>

  <option value="9">9</option>

  <option value="10">10</option>

  <option value="11">11</option>

  <option value="12">12</option>

  <option value="13">13</option>

  <option value="14">14</option>

  <option value="15">15</option>

  <option value="16">16</option>

</SELECT><br>

<INPUT type="submit" name="Button" value="ON"><br>

<INPUT type="submit" name="Button" value="OFF"><br>

</FORM>

EOFORMA;

function mainPage($message) {  

$M_form = <<< EOFORMM

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<HTML>

<HEAD>

  <TITLE>X10</TITLE>

</HEAD>

<BODY>

<H2>X10</H2>

$message  

</body>

</HTML>

EOFORMM;

echo $M_form;

};

function ExecCmd($c) {

global $thisfile;

$C_form = <<< EOFORMC

 <HTML><HEAD>

 <meta HTTP-EQUIV="REFRESH" content="2; url=$thisfile">

 <TITLE>Exec X10 cmd</TITLE>

 </HEAD>

 <BODY>

 <h2>$c</h2><br>

EOFORMC;

echo $C_form; 

$c = "/usr/bin/br ".$c;

$res = system($c,$rc); 

if ($rc <> 0 ) {

   echo "<br><pre>Return Code=$rc</pre><br>";

   echo "<pre>Message=$res</pre>";

   };

echo "</body></html>";

}

//---------------- Form Control Branching ----------------------------------

if (!$_POST['Button'] ) {

  // First time  - show the A form

  mainPage($A_form);

  }  

else ExecCmd( 'A' . $_POST['codeA'] .' '.$_POST['Button']);  

?>


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