start copy from cimac web

Connections/cmctrfdb.php

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+<?php
+# FileName="WADYN_MYSQLI_CONN.htm"
+# Type="MYSQL"
+# HTTP="true"
+
+@session_start();
+
+/*
+|--------------------------------------------------------------------------
+| Load Composer and .env
+|--------------------------------------------------------------------------
+| This file is inside: cmccopiaoriginale/Connections/
+| vendor and .env are inside: cmccopiaoriginale/
+*/
+
+require_once __DIR__ . '/../vendor/autoload.php';
+
+$dotenv = Dotenv\Dotenv::createImmutable(__DIR__ . '/../');
+$dotenv->safeLoad();
+
+/*
+|--------------------------------------------------------------------------
+| Database configuration from .env
+|--------------------------------------------------------------------------
+*/
+
+$hostname_cmctrfdb = $_ENV['DB_HOST'] ?? getenv('DB_HOST') ?? 'localhost';
+$database_cmctrfdb = $_ENV['DB_DATABASE'] ?? getenv('DB_DATABASE') ?? '';
+$username_cmctrfdb = $_ENV['DB_USERNAME'] ?? getenv('DB_USERNAME') ?? '';
+$password_cmctrfdb = $_ENV['DB_PASSWORD'] ?? getenv('DB_PASSWORD') ?? '';
+
+$servername = $hostname_cmctrfdb;
+$username = $username_cmctrfdb;
+$password = $password_cmctrfdb;
+$dbname = $database_cmctrfdb;
+
+/*
+|--------------------------------------------------------------------------
+| MySQLi connection
+|--------------------------------------------------------------------------
+*/
+
+$cmctrfdb = mysqli_init();
+
+if (defined("MYSQLI_OPT_INT_AND_FLOAT_NATIVE")) {
+    $cmctrfdb->options(MYSQLI_OPT_INT_AND_FLOAT_NATIVE, true);
+}
+
+$cmctrfdb->real_connect(
+    $hostname_cmctrfdb,
+    $username_cmctrfdb,
+    $password_cmctrfdb,
+    $database_cmctrfdb
+) or die("Connect Error: " . mysqli_connect_error());