How can I create a PHP script to count unique website visitors with a daily limit?

How do I count unique visitors to my site?

Question:

I need a visitor counter that counts unique visitors to my site. By unique, I mean a person can only view a post once a day or week. Can you provide the PHP code for this?

Answer:

The below PHP code will count unique visitors to your site, limiting each visitor to one count per day:

<?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";
?>

Explanation:

• The PHP script reads visitor counts from a text file, visitor_counts.txt.
• Each line in the text file represents a unique visitor's IP address.
• If the visitor's IP address is already in the text file, they have already been counted today and the count is not incremented.
• Otherwise, the IP address is added to the text file and the count is incremented.

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