<?php
// WordPress Session Handling (Stubs for phprs)

// Session storage (in-memory for this implementation)
global $wp_session_data;
$wp_session_data = array();

// Start session
function wp_session_start() {
    global $wp_session_data;
    if (!isset($wp_session_data)) {
        $wp_session_data = array();
    }
    return true;
}

// Get session variable
function wp_session_get($key, $default = null) {
    global $wp_session_data;
    return isset($wp_session_data[$key]) ? $wp_session_data[$key] : $default;
}

// Set session variable
function wp_session_set($key, $value) {
    global $wp_session_data;
    $wp_session_data[$key] = $value;
}

// Delete session variable
function wp_session_delete($key) {
    global $wp_session_data;
    unset($wp_session_data[$key]);
}

// Destroy session
function wp_session_destroy() {
    global $wp_session_data;
    $wp_session_data = array();
}

// Check if session is started
function wp_session_is_started() {
    global $wp_session_data;
    return isset($wp_session_data);
}

// PHP session functions (stubs)
function session_start() {
    return wp_session_start();
}

function session_destroy() {
    return wp_session_destroy();
}

function session_id($id = null) {
    if ($id !== null) {
        return $id;
    }
    return 'phprs_session_' . uniqid();
}

function session_name($name = null) {
    if ($name !== null) {
        return $name;
    }
    return 'PHPSESSID';
}

function session_regenerate_id($delete_old_session = false) {
    return true;
}

function session_write_close() {
    return true;
}

// Generate unique ID (stub)
function uniqid($prefix = '', $more_entropy = false) {
    static $counter = 0;
    $counter++;
    return $prefix . dechex(time()) . dechex($counter);
}

// Decimal to hexadecimal
function dechex($number) {
    $hex = '';
    $hex_chars = '0123456789abcdef';
    while ($number > 0) {
        $hex = $hex_chars[$number % 16] . $hex;
        $number = (int)($number / 16);
    }
    return $hex === '' ? '0' : $hex;
}

// Get current timestamp
function time() {
    // This would normally return Unix timestamp
    // For stub purposes, return a fixed value
    return 1708646400; // 2024-02-23
}
