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How can PHP beginners effectively use the $_SERVER['REMOTE_ADDR'] variable to access visitor IP addresses?

To access visitor IP addresses in PHP, beginners can effectively use the $_SERVER['REMOTE_ADDR'] variable. This variable contains the IP address of the visitor accessing the website. By using this variable, beginners can easily retrieve and store the visitor's IP address for various purposes such as tracking, security, or personalization.

php 
<?php
// Get the visitor's IP address
$visitor_ip = $_SERVER['REMOTE_ADDR'];

// Print the visitor's IP address
echo "Visitor's IP address: " . $visitor_ip;
?>

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