PHP Get Geo-IP Information

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Requests a geo-IP-server to check, returns where an IP is located (host, state, country, town).

<?php
       $ip='94.219.40.96';
       print_r(geoCheckIP($ip));
       //Array ( [domain] => dslb-094-219-040-096.pools.arcor-ip.net [country] => DE - Germany [state] => Hessen [town] => Erzhausen )

       //Get an array with geoip-infodata
       function geoCheckIP($ip)
       {
               //check, if the provided ip is valid
               if(!filter_var($ip, FILTER_VALIDATE_IP))
               {
                       throw new InvalidArgumentException("IP is not valid");
               }

               //contact ip-server
               $response=@file_get_contents('http://www.netip.de/search?query='.$ip);
               if (empty($response))
               {
                       throw new InvalidArgumentException("Error contacting Geo-IP-Server");
               }

               //Array containing all regex-patterns necessary to extract ip-geoinfo from page
               $patterns=array();
               $patterns["domain"] = '#Domain: (.*?)&nbsp;#i';
               $patterns["country"] = '#Country: (.*?)&nbsp;#i';
               $patterns["state"] = '#State/Region: (.*?)<br#i';
               $patterns["town"] = '#City: (.*?)<br#i';

               //Array where results will be stored
               $ipInfo=array();

               //check response from ipserver for above patterns
               foreach ($patterns as $key => $pattern)
               {
                       //store the result in array
                       $ipInfo[$key] = preg_match($pattern,$response,$value) && !empty($value[1]) ? $value[1] : 'not found';
               }

               return $ipInfo;
       }

?>

PHP function Get File Size

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/*
 * @param string $file Filepath
 * @param int $digits Digits to display
 * @return string|bool Size (KB, MB, GB, TB) or boolean
 */

function getFilesize($file,$digits = 2) {
       if (is_file($file)) {
               $filePath = $file;
               if (!realpath($filePath)) {
                       $filePath = $_SERVER["DOCUMENT_ROOT"].$filePath;
       }
           $fileSize = filesize($filePath);
               $sizes = array("TB","GB","MB","KB","B");
               $total = count($sizes);
               while ($total-- && $fileSize > 1024) {
                       $fileSize /= 1024;
                       }
               return round($fileSize, $digits)." ".$sizes[$total];
       }
       return false;
}

Tutorial Get File Last Updated Date

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/*
 * @param string $file Filepath
 * @param string $format dateformat
 * @link http://www.php.net/manual/de/function.date.php
 * @link http://www.php.net/manual/de/function.filemtime.php
 * @return string|bool Date or Boolean
 */

function getFiledate($file, $format) {
       if (is_file($file)) {
               $filePath = $file;
               if (!realpath($filePath)) {
                       $filePath = $_SERVER["DOCUMENT_ROOT"].$filePath;
       }
               $fileDate = filemtime($filePath);
               if ($fileDate) {
                       $fileDate = date("$format",$fileDate);
                       return $fileDate;
               }
               return false;
       }
       return false;
}

PHP Get FeedBurner Subscriber Count with cURL

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$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,'https://feedburner.google.com/api/awareness/1.0/GetFeedData?id=7qkrmib4r9rscbplq5qgadiiq4');
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,2);
$content = curl_exec($ch);
$subscribers = get_match('/circulation="(.*)"/isU',$content);
curl_close($ch);

The $subscribers variable will then be your subscriber count, for echoing out (or whatever). You'll need to replace the ID at the end of the second line with your feed's ID (find it). You'll also need to have the Awareness feature of FeedBurner enabled.

Tutorial Get Current Page URL

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function getUrl() {
  $url  = @( $_SERVER["HTTPS"] != 'on' ) ? 'http://'.$_SERVER["SERVER_NAME"] :  'https://'.$_SERVER["SERVER_NAME"];
  $url .= ( $_SERVER["SERVER_PORT"] !== 80 ) ? ":".$_SERVER["SERVER_PORT"] : "";
  $url .= $_SERVER["REQUEST_URI"];
  return $url;
}

Tutorial Get Current File Name

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<?php
    $pageName = basename($_SERVER['PHP_SELF']);
?>

Potential use:

<body id="body_<?php echo $pageName; ?>">

Append ID to body to do different CSS styles on different pages.

Tutorial Get All-Time Number of MySQL Queries

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<?php
       $handle=@mysql_connect("localhost","root","");

       if (!$handle)
       {
               die("No connection to database");
       }

       echo 'Total number of all-time mysql-queries: '.getTotalNumberOfMySQLQuerys();


       //Returns integer-value of the total number of alltime mysql-calls that have been made
       function getTotalNumberOfMySQLQuerys()
       {
               //global mysql-status containing the number of querys has been renamed in newer versions of mysql
               $mysqlVersion=getMysqlVersion();

               //contact helper-function to receive the mysql-version
               if ($mysqlVersion()>=50002)
               {
                       $sql="SHOW GLOBAL STATUS LIKE 'Questions'";
               }
               else
               {
                       $sql="SHOW STATUS LIKE 'Questions'";
               }

               $result=@mysql_query( $sql );
               $row=@mysql_fetch_array( $result );
               return $row['Value'];
       }

       //helper function is needed to detect the exact mysql-version
       function getMysqlVersion()
       {
               $sql = 'SELECT VERSION() AS versionsinfo';
               $result = @mysql_query('SELECT VERSION() AS versionsinfo');
               $version = @mysql_result( $result, 0, "versionsinfo" );
               $match = explode('.',$version);
               return sprintf('%d%02d%02d',$match[0],$match[1],intval($match[2]));
       }
?>

Because the name of the global mysql-status-variable containing the number of queries changed in later versions of mysql, a helper-function is needed to detect the exact version of mysql you're running.