What are some best practices for implementing a system to check the online status of computers using PHP?

To implement a system to check the online status of computers using PHP, you can use a combination of server-side scripts and AJAX requests to periodically ping the computers and update their status on the web interface. 

<?php
// Function to check if a computer is online
function checkOnlineStatus($ip) {
    $ping = exec("ping -c 1 $ip");
    if (strpos($ping, "1 packets transmitted, 1 received") !== false) {
        return true;
    } else {
        return false;
    }
}

// Get the list of computers
$computers = array("192.168.1.1", "192.168.1.2", "192.168.1.3");

// Check the online status of each computer
foreach ($computers as $computer) {
    if (checkOnlineStatus($computer)) {
        echo $computer . " is online<br>";
    } else {
        echo $computer . " is offline<br>";
    }
}
?>

Keywords

ping network monitoring cron job socket programming error handling

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