PHP Safe Session Start With no Errors


Example

Many developers have this problem when they work on huge projects, especially if they work on some modular CMS on plugins, addons, components etc. Here is solution for safe session start where if first checked PHP version to cover all versions and on next is checked if session is started. If session not exists then I start session safe. If session exists nothing happen.

if (version_compare(PHP_VERSION, '7.0.0') >= 0) {
    if(session_status() == PHP_SESSION_NONE) {
        session_start(array(
          'cache_limiter' => 'private',
          'read_and_close' => true,
       ));
    }
}
else if (version_compare(PHP_VERSION, '5.4.0') >= 0)
{
    if (session_status() == PHP_SESSION_NONE) {
        session_start();
    }
}
else
{
    if(session_id() == '') {
        session_start();
    }
}

This can help you a lot to avoid session_start error.