Add -> add project

app/core/db.php

@@ -0,0 +1,13 @@
+<?php
+$config = require __DIR__ . '/../config/config.php';
+try {
+    $pdo = new PDO(
+        "mysql:host={$config['db']['host']};dbname={$config['db']['name']};charset=utf8mb4",
+        $config['db']['user'],
+        $config['db']['pass'],
+        [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]
+    );
+} catch (Exception $e) {
+    die('Database connection error');
+}
+return $pdo;

app/core/redis.php

@@ -0,0 +1,13 @@
+<?php
+
+function redisClient()
+{
+    static $redis = null;
+    if ($redis === null) {
+        $config = require __DIR__ . '/../config/config.php';
+
+        $redis = new Redis();
+        $redis->connect($config['redis']['host'], $config['redis']['port']);
+    }
+    return $redis;
+}

app/core/security.php

@@ -0,0 +1,15 @@
+<?php
+function encryptText($text, $key) {
+    $iv = random_bytes(16);
+    $cipher = openssl_encrypt($text, 'AES-256-CBC', $key, 0, $iv);
+    return [
+        'cipher' => $cipher,
+        'iv' => base64_encode($iv)
+    ];
+}
+function decryptText($cipher, $iv, $key) {
+    return openssl_decrypt($cipher, 'AES-256-CBC', $key, 0, base64_decode($iv));
+}
+function generateId() {
+    return bin2hex(random_bytes(16));
+}