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Making Usage Statistics in PHP


Making usage statistics on a web site is one of the most enjoyable things for me on the Internet. Thanks to the technology, you can see each click of each visitor, the date of the visiting, and how many seconds the user was reading your site. I use this feature to track which of my articles was read for the longest time. In this article I will show you how to store the statistics in a MySQL database, show the web stats in an HTML table and make figures based on the stats using the GD library. 

Author Info:
By: Adam Szanto
Rating: 4 stars4 stars4 stars4 stars4 stars / 145
February 16, 2004
TABLE OF CONTENTS:
  1. · Making Usage Statistics in PHP
  2. · Save the HTML Title
  3. · Showing the Statistics Table
  4. · Showing Figures Based on the Statistics
  5. · Creating the Image Library
  6. · Charting the Results
  7. · Before Saying Goodbye

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Making Usage Statistics in PHP - Before Saying Goodbye
(Page 7 of 7 )

Put the picture making part of your program to the beginning of your main PHP that produces HTML output! Use the isset() function that makes you able to check whether a variable is set or not.

An example: you have a huge code in an index.php file with an if (isset($gd)) condition at the beginning. The output of the index.php is HTML, if there's no $gd set and if there is, then the output is image. Imagine that you can include pictures with echoing a simple <img src=?gd=> tag. My favourite usage of this is the code below (thanks to Jack Shieh). It shows a thumbnail of the images stored in a MySQL table.


if (isset($pic_id)) {
   $q
='SELECT Picture FROM images WHERE ID='.$pic_id;
   $pic_r
=mysql_query($q) or print(mysql_error());
   $pic
=mysql_fetch_array($pic_r);
   
header("Content-type: image/jpeg");
   
$size=80// new image width
   $src=imagecreatefromstring($pic['Picture']);
   $width=imagesx($src); $height=imagesy($src);
   
$aspect_ratio $height/$width;
   if (
$width <= $size) {
      $new_w 
$width;
      $new_h 
$height;
   
} else {
   $new_w 
$size;
   $new_h 
abs($new_w $aspect_ratio);
   
}
   
$img imagecreatetruecolor($new_w,$new_h);
   imagecopyresized 
(img,$src,0,0,0,0,$new_w,$new_h,$width,$height);
   
imagejpeg($img);
}
$q='SELECT ID FROM images';
$ids_r
=mysql_query($q) or print(mysql_error());
echo 
"<table width=100%><tr>";
while (
$ids=mysql_fetch_array($ids_r))
   
echo "<td><img src=?pic_id=".$ids['ID']."></td>n";
echo 
"</tr></table>";

 

I hope that now you can track your visitors and make graphical statistics easily as well. I wish you the experience of being visited - and I wish you saw your success also in the statistics!

 


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