What potential issues can arise from starting multiple sessions in PHP?

Potential issues that can arise from starting multiple sessions in PHP include conflicts with session data, increased server load, and potential security vulnerabilities. To solve this issue, it is recommended to only start a session if one is not already active.

// Check if a session is not already active before starting a new one
if(session_status() == PHP_SESSION_NONE) {
    session_start();
}