PHP頁面視圖計數器

Question

我下載了一個PHP視圖計數器，並將其設置爲數據庫，但是當它顯示點擊時我收到錯誤。該文件說

• 用法：
  • 在腳本中，使用reqire_once（）導入此腳本，然後調用
  • 功能，如PHPCount :: AddHit（...）;查看每個功能的幫助。 *

這是我demo.php，我要顯示的視圖。但它扔

Notice: Undefined variable: pageID in C:\xampp\htdocs\test\demo.php on line 4 1

<?php 
include_once("hit.php"); 
echo //this is what I added. 
PHPCount::AddHit($pageID); 
?> 

下面是hit.php和什麼，我想知道的是我怎麼能顯示在以上demo.php看法？

<?php 
/* 
* USAGE: 
*  In your script, use reqire_once() to import this script, then call the 
*  functions like PHPCount::AddHit(...); See each function for help. 
* 
* NOTE: You must set the database credentials in the InitDB method. 
*/ 

class PHPCount 
{ 
    /* 
    * Defines how many seconds a hit should be rememberd for. This prevents the 
    * database from perpetually increasing in size. Thirty days (the default) 
    * works well. If someone visits a page and comes back in a month, it will be 
    * counted as another unique hit. 
    */ 
    const HIT_OLD_AFTER_SECONDS = 2592000; // default: 30 days. 

    // Don't count hits from search robots and crawlers. 
    const IGNORE_SEARCH_BOTS = true; 

    // Don't count the hit if the browser sends the DNT: 1 header. 
const HONOR_DO_NOT_TRACK = false; 

private static $IP_IGNORE_LIST = array(
    '127.0.0.1', 
); 

private static $DB = false; 

private static function InitDB() 
{ 
    if(self::$DB) 
     return; 

    try 
    { 
     // TODO: Set the database login credentials. 
     self::$DB = new PDO(
      'mysql:host=localhost;dbname=test', 
      'root', // Username 
      '', // Password 
      array(PDO::ATTR_PERSISTENT => true) 
     ); 
    } 
    catch(Exception $e) 
    { 
     die('Failed to connect to phpcount database'); 
    } 
} 

/* 
* Adds a hit to a page specified by a unique $pageID string. 
*/ 
public static function AddHit($pageID) 
{ 
    if(self::IGNORE_SEARCH_BOTS && self::IsSearchBot()) 
     return false; 
    if(in_array($_SERVER['REMOTE_ADDR'], self::$IP_IGNORE_LIST)) 
     return false; 
    if(
     self::HONOR_DO_NOT_TRACK && 
     isset($_SERVER['HTTP_DNT']) && $_SERVER['HTTP_DNT'] == "1" 
    ) { 
     return false; 
    } 

    self::InitDB(); 

    self::Cleanup(); 
    self::CreateCountsIfNotPresent($pageID); 
    if(self::UniqueHit($pageID)) 
    { 
     self::CountHit($pageID, true); 
     self::LogHit($pageID); 
    } 
    self::CountHit($pageID, false); 

    return true; 
} 

/* 
* Returns (int) the amount of hits a page has 
* $pageID - the page identifier 
* $unique - true if you want unique hit count 
*/ 
public static function GetHits($pageID, $unique = false) 
{ 
    self::InitDB(); 

    self::CreateCountsIfNotPresent($pageID); 

    $q = self::$DB->prepare(
     'SELECT hitcount FROM hits 
     WHERE pageid = :pageid AND isunique = :isunique' 
    ); 
    $q->bindParam(':pageid', $pageID); 
    $q->bindParam(':isunique', $unique); 
    $q->execute(); 

    if(($res = $q->fetch()) !== FALSE) 
    { 
     return (int)$res['hitcount']; 
    } 
    else 
    { 
     die("Missing hit count from database!"); 
     return false; 
    } 
} 

/* 
* Returns the total amount of hits to the entire website 
* When $unique is FALSE, it returns the sum of all non-unique hit counts 
* for every page. When $unique is TRUE, it returns the sum of all unique 
* hit counts for every page, so the value that's returned IS NOT the 
* amount of site-wide unique hits, it is the sum of each page's unique 
* hit count. 
*/ 
public static function GetTotalHits($unique = false) 
{ 
    self::InitDB(); 

    $q = self::$DB->prepare(
     'SELECT hitcount FROM hits WHERE isunique = :isunique' 
    ); 
    $q->bindParam(':isunique', $unique); 
    $q->execute(); 
    $rows = $q->fetchAll(); 

    $total = 0; 
    foreach($rows as $row) 
    { 
     $total += (int)$row['hitcount']; 
    } 
    return $total; 
} 

/*====================== PRIVATE METHODS =============================*/ 

private static function IsSearchBot() 
{ 
    // Of course, this is not perfect, but it at least catches the major 
    // search engines that index most often. 
    $keywords = array(
     'bot', 
     'spider', 
     'spyder', 
     'crawlwer', 
     'walker', 
     'search', 
     'yahoo', 
     'holmes', 
     'htdig', 
     'archive', 
     'tineye', 
     'yacy', 
     'yeti', 
    ); 

    $agent = strtolower($_SERVER['HTTP_USER_AGENT']); 

    foreach($keywords as $keyword) 
    { 
     if(strpos($agent, $keyword) !== false) 
      return true; 
    } 

    return false; 
} 

private static function UniqueHit($pageID) 
{ 
    $ids_hash = self::IDHash($pageID); 

    $q = self::$DB->prepare(
     'SELECT time FROM nodupes WHERE ids_hash = :ids_hash' 
    ); 
    $q->bindParam(':ids_hash', $ids_hash); 
    $q->execute(); 

    if(($res = $q->fetch()) !== false) 
    { 
     if($res['time'] > time() - self::HIT_OLD_AFTER_SECONDS) 
      return false; 
     else 
      return true; 
    } 
    else 
    { 
     return true; 
    } 
} 

private static function LogHit($pageID) 
{ 
    $ids_hash = self::IDHash($pageID); 

    $q = self::$DB->prepare(
     'SELECT time FROM nodupes WHERE ids_hash = :ids_hash' 
    ); 
    $q->bindParam(':ids_hash', $ids_hash); 
    $q->execute(); 

    $curTime = time(); 

    if(($res = $q->fetch()) !== false) 
    { 
     $s = self::$DB->prepare(
      'UPDATE nodupes SET time = :time WHERE ids_hash = :ids_hash' 
     ); 
     $s->bindParam(':time', $curTime); 
     $s->bindParam(':ids_hash', $ids_hash); 
     $s->execute(); 
    } 
    else 
    { 
     $s = self::$DB->prepare(
      'INSERT INTO nodupes (ids_hash, time) 
      VALUES(:ids_hash, :time)' 
     ); 
     $s->bindParam(':time', $curTime); 
     $s->bindParam(':ids_hash', $ids_hash); 
     $s->execute(); 
    } 
} 

private static function CountHit($pageID, $unique) 
{ 
    $q = self::$DB->prepare(
     'UPDATE hits SET hitcount = hitcount + 1 ' . 
     'WHERE pageid = :pageid AND isunique = :isunique' 
    ); 
    $q->bindParam(':pageid', $pageID); 
    $unique = $unique ? '1' : '0'; 
    $q->bindParam(':isunique', $unique); 
    $q->execute(); 
} 

private static function IDHash($pageID) 
{ 
    $visitorID = $_SERVER['REMOTE_ADDR']; 
    return hash("SHA256", $pageID . $visitorID); 
} 

private static function CreateCountsIfNotPresent($pageID) 
{ 
    // Non-unique 
    $q = self::$DB->prepare(
     'SELECT pageid FROM hits WHERE pageid = :pageid AND isunique = 0' 
    ); 
    $q->bindParam(':pageid', $pageID); 
    $q->execute(); 

    if($q->fetch() === false) 
    { 
     $s = self::$DB->prepare(
      'INSERT INTO hits (pageid, isunique, hitcount) 
      VALUES (:pageid, 0, 0)' 
     ); 
     $s->bindParam(':pageid', $pageID); 
     $s->execute(); 
    } 

    // Unique 
    $q = self::$DB->prepare(
     'SELECT pageid FROM hits WHERE pageid = :pageid AND isunique = 1' 
    ); 
    $q->bindParam(':pageid', $pageID); 
    $q->execute(); 

    if($q->fetch() === false) 
    { 
     $s = self::$DB->prepare(
      'INSERT INTO hits (pageid, isunique, hitcount) 
      VALUES (:pageid, 1, 0)' 
     ); 
     $s->bindParam(':pageid', $pageID); 
     $s->execute(); 
    } 
} 

private static function Cleanup() 
{ 
    $last_interval = time() - self::HIT_OLD_AFTER_SECONDS; 

    $q = self::$DB->prepare(
     'DELETE FROM nodupes WHERE time < :time' 
    ); 
    $q->bindParam(':time', $last_interval); 
    $q->execute(); 
} 
} 

Answer 1

您可能需要指定PAGEID

PHPCount::AddHit("index");