编辑：已解决
我试图从一个单独的文件中为mysql连接传递一些变量。然而，它们似乎只是以字符串形式出现，而不是作为变量出现。
connect.php：
<?php
function connect(){
require ($_SERVER['DOCUMENT_ROOT'].'/db-connect.php');
$conn1 = new mysqli($servername, $username, $password, $dbname);
if ($conn1->connect_error) {
die("Connection failed: " . $conn1->connect_error);
}
echo $conn1->host_info . "'n";
}
connect();
?>
db-connect.hp:
<?php
$servername = "localhost";
$username = "-";
$password = "--";
$dbname = "---";
?>
消息通过：
$servername = "localhost"; $username = "-"; $password = "--"; $dbname = "---";Connection failed: Access denied for user '-'@'localhost' (using password: NO)
注意事项：末尾的$密码与db-connect.php文件中的密码不同。这是我第一次尝试时使用的旧密码。此外，用户'-'@'localhost'是旧用户，而不是$username中的用户。
有什么想法吗？谢谢？Matt
也许这种方式对您更有效。
<?php
require ($_SERVER['DOCUMENT_ROOT'].'/db-connect.php');
function connect(){
global $servername, $username, $password, $dbname;
$conn1 = new mysqli($servername, $username, $password, $dbname);
if ($conn1->connect_error) {
die("Connection failed: " . $conn1->connect_error);
}
echo $conn1->host_info . "'n";
}
connect();
?>