PHPでデータベースが選択されていませんMySqli

Question

私はMySQLiに切り替えましたが、ログインページを読み込む際にいくつか問題があります。 「データベースが選択されていません」というエラーが表示されます。

これは私の接続コードです。

<?php 
// config 

$config['host'] = ""; 

$config['user'] = ""; 

$config['pass'] = ""; 

$config['db'] = ""; 

// the @ sign is an error supressor, meaning we can use our own error messages, this connects and selects db 
@($GLOBALS["___mysqli_ston"] = mysqli_connect(
    "$config[host]", "$config[user]", "$config[pass]" 
)) 
or die("error :".((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)).""); 
@((bool)mysqli_query($GLOBALS["___mysqli_ston"], "USE " . $config['db'])) 
or die("error:".((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)).""); 

?> 

Answer 1

以下のコードを確認してください。

// config 
$config['host'] = "localhost"; // host name of your mysql server 

$config['user'] = "root"; // your mysql username 

$config['pass'] = ""; // your mysql password 

$config['db'] = "sb_posts"; // the database your table is in. 

// the @ sign is an error supressor, meaning we can use our own error messages, this connects and selects db 
@($GLOBALS["___mysqli_ston"] = msqli_connect("".$config['host']."","".$config['user']."","".$config['pass']."","".$config['db'] ."")) or die("There was an error connecting to the database, MySql said:<br />".((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)).""); 
@((bool)mysqli_query($GLOBALS["___mysqli_ston"], "USE " . $config['db'])) or die("There was an error connecting to the database, MySql said:<br />".((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false))."");