问题:
我需要一个可计算唯一访问者的计数器访问我网站的访客。所谓独特,是指一个人每天或每周只能查看一次帖子。您能提供相应的 PHP 代码吗?
答案:
以下 PHP 代码将计算您网站的唯一访问者数量,限制每个访问者每天只能计数一次:
<?php // Initialize variables $filePath = 'visitor_counts.txt'; $timeLimit = 86400; // One day in seconds (24 * 60 * 60) // Get the visitor's IP address $ip = $_SERVER['REMOTE_ADDR']; // Read the visitor counts file $visitorCounts = file_get_contents($filePath); // Parse the visitor counts into an array $visitorCountsArray = explode("\n", $visitorCounts); // Check if the visitor's IP address is already in the array if (in_array($ip, $visitorCountsArray)) { // Visitor has already been counted today echo "Visitor has already been counted today"; } else { // Add the visitor's IP address to the array $visitorCountsArray[] = $ip; // Update the visitor counts file file_put_contents($filePath, implode("\n", $visitorCountsArray)); // Increment the visitor count $visitorCount++; } // Echo the visitor count echo "Visitor count: $visitorCount"; ?>
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