PHP Session Status for JS

session_status.php

<?php

/* 
 * Return the status of the current PHP session in a JS readable format.
 * 
 * Result from session_status()   |  JS Translation
 * ------------------------------  ---------------------------
 * PHP_SESSION_DISABLED     0     |  none
 * PHP_SESSION_NONE         1     |  none
 * PHP_SESSION_ACTIVE       2     |  ok          
 * ------------------------------  ---------------------------
 * 
 * Examples of JSON returned by this function:
 * {"session": "none"}
 * {"session": "ok"}
 * 
 */

    $word = "none";
    if( session_status() == PHP_SESSION_ACTIVE ){
        $word = "ok";
    }

    // Construct the JSON to be sent.
    $myJSON = new StdClass;
    $myJSON->session = $word;
    
    // Set header and output the JSON.
    header('Content-Type: application/json');
    echo json_encode($myJSON);