無法使用PHP連接到MAMP中的MYSQL

Question

我剛剛安裝了MAMP並創建了一個MYSQL數據庫。 我可以通過PHPMYADMIN訪問它。

在我的php頁面中，我直接從MAMP webstart頁面粘貼了它-

$user = 'root';
$password = 'root';
$db = 'local_db';
$host = 'localhost';
$port = 3306;

$link = mysql_connect(
   "$host:$port", 
   $user, 
   $password
);
$db_selected = mysql_select_db(
   $db, 
   $link
);

此時結果頁面停止，將不會打印這些說明之下的任何內容。

我嘗試在MAMP首選項中更改端口。 我也包含或死亡（“無法連接”）； 在第一行之后，但在頁面中的鏈接數據之后仍然沒有收到任何文本。

我在線檢查了一下，其他有問題的人至少看到了模具文字。 我不明白

除了弄亂端口號外，我沒有更改任何密碼或數據。

任何幫助，將不勝感激！

Answer 1

請嘗試以下操作，我已經在本地進行了開發和測試，其中的功能已記錄在案，可幫助您了解每個步驟的進展。

    /**
    *
    * Modern method of connecting to a MySQL database and keeping it simple.
    *
    * If you would like to learn more about PDO,
    * please visit http://php.net/manual/en/book.pdo.php
    * 
    */

    //Set up database connection constants, so they cannot be changed.
    define('DBHOST','127.0.0.1'); //Change this to the ip address of your database
    define('DBNAME','test'); // Change this to the database name you are trying to connect to.
    define('DBUSER','databaseuser'); // Insure this user is not the root user!!!!
    define('DBPASS','databasepassword'); // Insure this is not the root password!!!!

    //Let's try to connect to the database first.
    try {
        //Initiate a new PDO object called $MYDB and pass it the proper information to make
        //the connection
        $MYDB = new PDO("mysql:host=".DBHOST.";dbname=".DBNAME."", DBUSER, DBPASS);

        //If we are successful show it :D for the test page, if this is for production you should not show this.
        echo "Database connection was successful.";

        //If this does not worth catch the exception thrown by PDO so we can use it.
    } catch(PDOException $e) {
        //Show that there was an issue connecting to the database.  Do not be specific because,
        //user's do not need to know the specific error that is causing a problem for security
        //reasons.
        echo "Oh, sorry there was an issue with your request please try again.";

        //Since we had an issue connecting to the database we should log it, so we can review it.
        error_log("Database Error" . $e->getMessage());
    }

    //Since this is 100% php code we do not need to add a closing php tag
    //Visit http://php.net/manual/en/language.basic-syntax.phptags.php for more information.

如果對此有任何疑問，請在閱讀PDO文檔時嘗試將其分解為較小的部分。