API-Blog

Write the script

<\?php

/**
 * PhP2Nag
 *
 * Curl Script to check a site for a particular string
 * if string is found. Returns OK else ERROR
 *
 * @author Alexander Pirsig
 * @version 0.1
 * @since 2009-08-19
 */

// Config Parameter
$url = "URL_TO_CHECK";
$userAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20041001 Firefox/0.10.1";
$pattern = "/.*(DocumentType).*/";
$timeout = 3;

// Start Request
$hits = array();
$url = str_replace( "&", "&", urldecode(trim($url)));
$ch = curl_init($url);

curl_setopt( $ch, CURLOPT_USERAGENT, $userAgent);
curl_setopt( $ch, CURLOPT_URL, $url);
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
curl_setopt( $ch, CURLOPT_AUTOREFERER, true );
curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT, $timeout );
curl_setopt( $ch, CURLOPT_TIMEOUT, $timeout );

$output = curl_exec($ch);

// Search for pattern
preg_match_all($pattern, $output, $hits, PREG_SET_ORDER);

// Return Result
if(count($hits)>0) {
        echo "OK";
} else {
        echo "ERROR";
}

Wiring it up

command[nrpe_check_external_1]=/usr/lib/nagios/plugins/check_http -H YOUR_WEBSITE_URL -p 80 -u "/PATH_TO_YOUR/PHP_SCRIPT.php" -s "OK" -t 2

Today we're had a minor problem with the GD Lib. in PHP5-GD under Debian etch. The problem was that we've tried to you special functionality that is only available if you're using php own library. Instead of using the bundled library php provides the Debian and Ubuntu maintainers compile php5-gd package against the shared system library.

So what happens is that you're probably missing some extra functionality in your PHP gd calls for example there is no imagerotate() or imageantialias() functions. They are only available in the Bundled version that comes with PHP.

A typical error you get is this:

JpGraph Error The function imageantialias() is not available in your PHP installation. Use the GD version that comes with PHP and not the standalone version.

But solving the problem thanks to debian is quite easy and only took some compile time. ;) To solve the problem I did the following steps:

Make sure your have you source package urls in apt sources.list defined simple check it by enter:

vi /etc/apt/sources.list

# A line like the following should appear 

# source urls starting with deb-src for example:

deb-src http://ftp.de.debian.org/debian/ etch main contrib non-free

Next we're installing needed packages.

# Install build tools, debian helpers and fakeroot

apt-get install build-essential debhelper fakeroot

# source code should reside in /usr/src

cd /usr/src

# Download PHP source

apt-get source php5

# Install all packages required to build PHP5

apt-get build-dep php5

Now we're altering the build path for gdlib and make php to complile against the bundled gd lib version.

cd /usr/src/[PHP_VERSION]/debian # In my case php5-5.2.0

vi rules

# Next where changing gd lib compiler flag

# REPLACE: --with-gd=shared,/usr --enable-gd-native-ttf WITH: --with-gd=shared --enable-gd-native-ttf

# save and close

cd /usr/src/[PHP_VERSION]

dpkg-buildpackage -rfakeroot

# This takes a while

cd /usr/src

# Install new php5-gd lib package in my case:

dpkg -i php5-gd_5.2.0-8+etch13_amd64.deb

# Restart your apache or what every 

/etc/init.d/apache2 restart

# Happy GD-ing :)

<\?php
/**
 * Make Sure XML is cached for couple of minutes
 */
$tmpfile = '/tmp/dilbert.rss';
$gap = 60*60*1; # 1 hour(s)

if(file_exists($tmpfile)===true && (filemtime($tmpfile)+$gap)>time())
{
  # Use locale cached dilbert Content
  $xmlStr = file_get_contents($tmpfile);
}
else
{
  # Reload Cached DilbertFeed
  if(!file_exists($tmpfile))
  {
    touch($tmpfile);
  }
  $xmlStr = file_get_contents('http://feeds2.feedburner.com/DilbertDailyStrip?format=rss');
  file_put_contents($tmpfile,$xmlStr);
}
$xml = new simpleXMLElement($xmlStr);
$content = $xml->xpath('//item');
\?>











More Dilbert Comics



".$content[0]->title."";  ?>

<\?php preg_match($expr,$content[0]->description,$matches); \?>
enclosure['url'] = $matches[1];
\?>
<\?php echo ""; \?>
<\?php echo "
Fetched: ".date('Y-m-d H:i:s', filemtime($tmpfile)); \?>
    
  

The requirements

• Firefox
• FireBug
• FirePHP
• PHP core libs for FirePHP

Netconsole settings

Net-Console Output

Testside PHP-Code

// Include FirePHP OOP Class
require_once("FirePHP.class.php");

// Define a Global DEBUG flag
// This should probly go to a central place
DEFINE(DEBUG,true);

// Get a instance the true automaticly create's
// an instance and makes sure there is only one
// registered (singleton)
$fb = FirePHP::getInstance(true);

// Array's with firephp configuration
//
// maxObjectDepth      Maximum depth to traverse objects.
// maxArrayDepth       Maximum depth to traverse arrays.
// useNativeJsonEncode Set to FALSE to use JSON encoder included
//                     with FirePHPCore instead of json_encode().
// includeLineNumbers  Include File and Line information in message.
// Defaults:
$options = array('maxObjectDepth' => 10,
                 'maxArrayDepth' => 20,
                 'useNativeJsonEncode' => true,
                 'includeLineNumbers' => true);

$fb->setOptions($options);

// Define to control global debug input output
$fb->setEnabled(DEBUG);

// Displays different kind of log output
$fb->log('Hello log');
$fb->info('Hello info');
$fb->warn('Hello warning');
$fb->error('Hello error');

echo "Normal site output";

Related sites

• More FirePHP Basic examples
• Integrating FirePHP for Ajax Development