ZZWX/wechat/Common/driver_config.php

<?php
if (empty($_SERVER['APPLICATION_ENV']) || $_SERVER['APPLICATION_ENV'] == 'production') {
    defined('APPLICATION_ENV') || define('APPLICATION_ENV', 'production');
} else {
    defined('APPLICATION_ENV') || define('APPLICATION_ENV', 'dev');
}
$getDbConfig = require dirname(dirname(__DIR__)) . '/config/dbConfig/db.' . APPLICATION_ENV . '.config.php';
$config = $getDbConfig['CST'];
define("MYSQL_HOST", $config['host']);
define("MYSQL_USER", $config['user']);
define("MYSQL_PASSWORD", $config['pwd']);
define("MYSQL_DB", $config['db']);
define("MYSQL_PORT", $config['port']);
function conn()
{
    $port = defined('MYSQL_PORT') ? MYSQL_PORT : 3306;
    try {
        $pdo = new PDO("mysql:host=" . MYSQL_HOST . ";port=" . $port . ";dbname=" . MYSQL_DB, MYSQL_USER, MYSQL_PASSWORD, array(PDO::MYSQL_ATTR_INIT_COMMAND => "set names utf8"));
        return $pdo;
    } catch (PDOException $e) {
        write_log('ctsdata_test new PDO failed:' . $e->getMessage());
    }
}

?>