很抱歉,如果这个问题可能已经和其他问题相似了。我确实成功地连接到了数据库。我将尝试显示我拥有的所有数据库。但是当我尝试使用我的代码时,我得到了这个错误。
<?php
    $servername = "localhost";
    $username = "root";
    $password = "";
// Create connection
$conn = new mysqli($servername, $username, $password);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 
echo "Connected successfully";
$sql = mysqli_query($conn,'SHOW DATABASES;');
$names = array($sql);
foreach ($names as $key => $value) {
    $row = mysqli_fetch_array($value);
    echo $row.'<br />';
}
?>发布于 2017-08-18 10:33:56
$sql = mysqli_query($conn,'SHOW DATABASES;');
$row = array();
while ($row[] = mysql_fetch_array($sql)) {        
    print_r ($row) ;       
}https://stackoverflow.com/questions/45747588
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