使用 php 配置文件连接到数据库而不是 PDO 连接线

Question

I have the following lines Of code for a database connection, however I would just want to use my include("config.php") Instead of this long line of code, how would i go about doing that

try {
    $dbh = new PDO('mysql:host=localhost;dbname=lms;charset=UTF-8', 'root', 'password');
}
catch (PDOException $e) {
    die('unable to connect to database ' . $e->getMessage());
}    

// create LM object, pass in PDO connection
$lm = new lazy_mofo($dbh); 

Answer 1

Just make a config.php file, for example consider this file is stored in web root ( /var/www/ ), then the contents of the config.php are like this:

<?php

    try {
        $dbh = new PDO('mysql:host=localhost;dbname=lms;charset=UTF-8', 'root', 'password');
    }
    catch (PDOException $e) {
        die('unable to connect to database ' . $e->getMessage());
    }    

    // create LM object, pass in PDO connection
    $lm = new lazy_mofo($dbh);

?>

then in your other PHP scripts use the include function:

<?php

    include '/var/www/config.php';
    ...

Now in your PHP scripts you can access the $lm object and $dbh object.

Answer 2

for example include("config.inc.php") and for the config.inc.php:

<?php
try {
    $dbh = new PDO('mysql:host=localhost;dbname=lms;charset=UTF-8', 'root', 'password');
}
catch (PDOException $e) {
    die('unable to connect to database ' . $e->getMessage());
}
$lm = new lazy_mofo($dbh); 
?>

Answer 3

You can create a db wrapper class in your include file and get really lazy about it =)

    define('DB_TYPE', 'mysql');
    define('DB_HOST', 'localhost');
    define('DB_NAME', 'lms');
    define('DB_USER', 'root');
    define('DB_PASS', 'password');

    class Database{

        public function __construct() {

            $db = new PDO(DB_TYPE.':host='.DB_HOST.';dbname='.DB_NAME, DB_USER, DB_PASS);
            $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        }

    }

    $o = new Database();

Answer 4

my connection PDO

  define("DB_HOST", "localhost");
  define("DB_USER", "root");
  define("DB_PASS", "");
  define("DB_NAME", "db");

      try {

        $db = new PDO("mysql:host=" . DB_HOST . ";charset=utf8mb4;dbname=" . DB_NAME, DB_USER, DB_PASS);

        /* set the PDO error mode to exception */
        $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        $db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);                           

        //echo "Connected successfully"; 

      }

      catch(PDOException $e)    {

        echo "Connection failed: " . $e->getMessage();

      }