September 2007
Beginner to intermediate
432 pages
17h 48m
English
Content preview from Making Things Talk
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
A MORE COMPLEX NETWORK 107
<?php
/*
Cat On Mat
Language: PHP
Expects a parameter called SensorValue, an integer.
Prints a custom message depending on the value of SensorValue.
*/
$threshold = 320; // minimum sensor value to trigger action
// print the beginning of the HTML page:
echo "<html><head></head><body>\n";
// read all the parameters and assign them to local variables:
foreach ($_REQUEST as $key => $value)
{
if ($key == "sensorValue") {
$sensorValue = $value;
}
}
// respond depending on the sensor value:
if ($sensorValue > $threshold) {
echo "<p> The cat is on the mat.</p>\n";
} else {
echo "<p> the cat is not on the mat.</p>\n";
}
// finish the HTML:
echo "</body></html>\n";
?>
8 In order for the PHP scripts to run, you’ll need
to install them on a web server that supports PHP.
There are many web hosting companies with
inexpensive (less than $10 a month) web hosting
plans that support PHP.
Save it to your server with the name cat-script.
php. Test it from a browser with this HTTP
request, using different values for sensorValue. Use a URL
similar to the one shown here, replacing www.example.
com with your server name, and adjusting the path to the
script as needed: http://www.example.com/catcam/cat-
script.php?sensorValue=12. Any value above 320 should
result in a message that the cat is on the mat. When you’re
satisfied that it works, change your ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.