fix: HTTP 500 - add missing DB includes to sub-pages, fix env reads, add cURL guards

api/chat.php

@@ -1,9 +1,9 @@
 <?php
 header('Content-Type: application/json');
 
-// Start session for simple rate limiting
-if (session_status() === PHP_SESSION_NONE) {
-    session_start();
+// Start session for simple rate limiting (skip if session already started or headers sent)
+if (session_status() === PHP_SESSION_NONE && !headers_sent()) {
+    @session_start();
 }
 
 // Simple rate limiting: max 30 requests per minute
@@ -25,7 +25,7 @@ $_SESSION['chat_requests'][] = $now;
 // Load DB connection which also loads environment variables
 require_once __DIR__ . '/../config/db.php';
 
-$apiKey = getenv('GEMINI_API_KEY') ?: ($_ENV['GEMINI_API_KEY'] ?? '');
+$apiKey = $_ENV['GEMINI_API_KEY'] ?? getenv('GEMINI_API_KEY') ?? '';
 if (empty($apiKey)) {
     http_response_code(500);
     echo json_encode(['error' => 'API Key configuration is missing. Please configure GEMINI_API_KEY in your .env file.']);
@@ -166,6 +166,13 @@ $requestPayload = [
     ]
 ];
 
+// Guard: cURL must be available
+if (!function_exists('curl_init')) {
+    http_response_code(503);
+    echo json_encode(['error' => 'cURL is not available on this server. Please use the client-side fallback.']);
+    exit;
+}
+
 // Call Gemini API via cURL
 $url = "https://generativelanguage.googleapis.com/v1/models/gemini-3.5-flash:generateContent?key=" . urlencode($apiKey);
 

blog.php

@@ -1,3 +1,4 @@
+<?php require_once __DIR__ . '/config/db.php'; ?>
 <!DOCTYPE html>
 <html lang="en">
 <head>

certifications.php

@@ -1,3 +1,4 @@
+<?php require_once __DIR__ . '/config/db.php'; ?>
 <!DOCTYPE html>
 <html lang="en">
 <head>

projects.php

@@ -1,3 +1,4 @@
+<?php require_once __DIR__ . '/config/db.php'; ?>
 <!DOCTYPE html>
 <html lang="en">
 <head>

send_contact.php

@@ -20,7 +20,7 @@ if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
 }
 
 $clientIp = getClientIp();
-$rateLimit = intval(getenv('RATE_LIMIT') ?: ($_ENV['RATE_LIMIT'] ?? 10));
+$rateLimit = intval($_ENV['RATE_LIMIT'] ?? getenv('RATE_LIMIT') ?? 10);
 
 // Query submissions count from this IP address in the last hour
 $stmt = $mysqli->prepare("SELECT COUNT(*) as count FROM email_submissions WHERE ip_address = ? AND submitted_at >= NOW() - INTERVAL 1 HOUR");
@@ -48,9 +48,14 @@ if ($logStmt) {
 }
 
 // Forward submission to FormSubmit via cURL
-$contactEmail = getenv('CONTACT_EMAIL') ?: ($_ENV['CONTACT_EMAIL'] ?? 'crischarlesgarcia345@gmail.com');
+$contactEmail = $_ENV['CONTACT_EMAIL'] ?? getenv('CONTACT_EMAIL') ?? 'crischarlesgarcia345@gmail.com';
 $url = "https://formsubmit.co/" . $contactEmail;
 
+if (!function_exists('curl_init')) {
+    header("Location: index.php?status=error&msg=cURL is not available on this server.#contact");
+    exit();
+}
+
 $ch = curl_init();
 curl_setopt($ch, CURLOPT_URL, $url);
 curl_setopt($ch, CURLOPT_POST, true);

views/chatbot.php

@@ -80,7 +80,7 @@ $systemPrompt .= "3. If asked about contact options or hiring, point them to his
 $systemPrompt .= "4. Do not make up facts or external projects not listed in the context. If you don't know the answer, politely invite the user to contact Cris directly.\n";
 $systemPrompt .= "5. Format your output using simple markdown (like bolding or bullet points) to make it readable.\n";
 
-$apiKey = getenv('GEMINI_API_KEY') ?: ($_ENV['GEMINI_API_KEY'] ?? '');
+$apiKey = $_ENV['GEMINI_API_KEY'] ?? getenv('GEMINI_API_KEY') ?? '';
 ?>
 
 <!-- Pass DB configuration context directly to javascript to allow direct API requests on restricted hosting environments (like InfinityFree) -->