Are there any security concerns to be aware of when implementing a script to check server status in PHP?

One security concern when implementing a script to check server status in PHP is the risk of exposing sensitive server information to potential attackers. To mitigate this risk, it is important to sanitize user input and limit the amount of information displayed to only what is necessary for monitoring purposes. 

<?php
// Sanitize user input
$server = filter_var($_GET['server'], FILTER_SANITIZE_STRING);

// Limit information displayed
if ($server == 'server1') {
    echo "Server 1 is running.";
} elseif ($server == 'server2') {
    echo "Server 2 is running.";
} else {
    echo "Invalid server name.";
}
?>

Keywords

security concerns server status PHP script implementation vulnerabilities

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