What potential problems can arise when integrating the code snippet provided into the existing online.php file?

One potential problem that can arise when integrating the provided code snippet into the existing online.php file is naming conflicts with existing variables or functions. To solve this issue, you can encapsulate the code snippet within a function to avoid variable scope conflicts. By doing so, you can ensure that the code snippet runs independently without interfering with other parts of the online.php file.

// Encapsulate the code snippet within a function to avoid naming conflicts
function checkOnlineStatus() {
    // Place the provided code snippet here
    // This function can be called when needed without causing conflicts
}

// Call the function to execute the code snippet
checkOnlineStatus();