157 lines
5.3 KiB
PHP
157 lines
5.3 KiB
PHP
<?php
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/*******************************************************************************
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* Title: PHP graphical hit counter (GCount)
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* Version: 1.3.1 from 4th January 2015
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* Author: Klemen Stirn
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* Website: http://www.phpjunkyard.com
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********************************************************************************
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* COPYRIGHT NOTICE
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* Copyright 2004-2015 Klemen Stirn. All Rights Reserved.
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* This script may be used and modified free of charge by anyone
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* AS LONG AS COPYRIGHT NOTICES AND ALL THE COMMENTS REMAIN INTACT.
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* By using this code you agree to indemnify Klemen Stirn from any
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* liability that might arise from it's use.
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* Selling the code for this program, in part or full, without prior
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* written consent is expressly forbidden.
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* Using this code, in part or full, to create derivate work,
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* new scripts or products is expressly forbidden. Obtain permission
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* before redistributing this software over the Internet or in
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* any other medium. In all cases copyright and header must remain intact.
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* This Copyright is in full effect in any country that has International
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* Trade Agreements with the United States of America or
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* with the European Union.
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********************************************************************************
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ACKNOWLEDGEMENT
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Please support future script development by linking to us:
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http://www.phpjunkyard.com/about/link2us.php
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Or by sending a small donation:
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http://www.phpjunkyard.com/about/donate.php
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*******************************************************************************/
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////////////////////////////////////////////////////////////////////////////////
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// SETTINGS
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////////////////////////////////////////////////////////////////////////////////
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// URL of the folder where script is installed. INCLUDE a "/" at the end!
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$base_url = 'counter/';
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// Default image style (font)
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$default_style = 'cntdwn';
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// Default counter image extension
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$default_ext = 'gif';
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// Count unique visitors? 1 = YES, 0 = NO
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$count_unique = 0;
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// Number of hours a visitor is considered as "unique"
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$unique_hours = 24;
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// Minimum number of digits shown (zero-padding). Set to 0 to disable.
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$min_digits = 0;
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////////////////////////////////////////////////////////////////////////////////
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// DO NOT EDIT BELOW
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////////////////////////////////////////////////////////////////////////////////
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// Turn error notices off
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error_reporting(E_ALL ^ E_NOTICE);
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// Set the correct MIME type
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header("Content-type: text/javascript");
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// Tell browsers not to cache the file output so we can count all hits
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header("Cache-Control: no-store, no-cache, must-revalidate");
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header("Cache-Control: post-check=0, pre-check=0", false);
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header("Pragma: no-cache");
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// Is page ID set?
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if (!isset($_GET['page'])) {
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die('ERROR: The gcount.php file must be called with a <b>?page=PAGEID</b> parameter, for example <b>gcount.php?page=test</b>');
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}
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// Remove any illegal chars from the page ID
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$page = preg_replace('/[^a-zA-Z0-9\-_\.]/', '', $_GET['page']);
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// Stop if $page is not valid
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if (!strlen($page)) {
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die('ERROR: Page ID is missing or contains only invalid chars. Please use only these chars for the page ID: a-z, A-Z, 0-9, ".", "-" and "_"');
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}
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// Get style and extension information
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$style = isset($_GET['style'])
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? preg_replace('/[^a-zA-Z0-9\-_\.]/', '', $_GET['style'])
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: $default_style;
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$ext = isset($_GET['ext'])
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? preg_replace('/[^a-zA-Z0-9\-_\.]/', '', $_GET['ext'])
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: $default_ext;
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// Set values for cookie, log file and style flye names
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$cname = 'gcount_unique_'.$page;
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$logfile = 'logs/' . $page . '.txt';
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$style_dir = 'styles/' . $style . '/';
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// Does the log file exist?
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if (!file_exists($logfile)) {
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die('ERROR: Log file not found. Make sure there is a file called <b>' . $page . '.txt</b> inside your <b>logs</b> folder. On most servers file names are CaSe SeNSiTiVe!');
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}
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// Open log file for reading and writing
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if ($fp = @fopen($logfile, 'r+')) {
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// Lock log file from other scripts
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$locked = flock($fp, LOCK_EX);
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// Lock successful?
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if ($locked) {
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// Let's read current count
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$count = intval(trim(fread($fp, filesize($logfile))));
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// If counting unique hits is enabled make sure it's a unique hit
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if ($count_unique == 0 || ! isset($_COOKIE[$cname])) {
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// Update count by 1 and write the new value to the log file
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$count = $count + 1;
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rewind($fp);
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fwrite($fp, $count);
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// Print the Cookie and P3P compact privacy policy
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header('P3P: CP="NOI NID"');
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setcookie($cname, 1, time()+60*60*$unique_hours);
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}
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}
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else {
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// Lock not successful. Better to ignore than to damage the log file
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$count = 1;
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}
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// Release file lock and close file handle
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flock($fp, LOCK_UN);
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fclose($fp);
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}
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else {
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die("ERROR: Can't read/write to the log file ($logfile). Make sure this file is writable by PHP scripts. On UNIX servers, CHMOD the log file to 666 (rw-rw-rw-).");
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}
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// Is zero-padding enabled? If yes, add zeros if required
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if ($min_digits) {
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$count = sprintf('%0' . $min_digits . 's', $count);
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}
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// Print out Javascript code and exit
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$len = strlen($count);
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for ($i = 0; $i < $len; $i++) {
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$url = $base_url . $style_dir . substr($count, $i, 1) . '.' . $ext;
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echo 'document.write(\'<img src="'. $url .'" border="0" />\');';
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}
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exit();
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?>
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