警告：mysqli_close（）期望参数1为mysqli

Question

我在带有MySQL的WAMP服务器上有这个PHP代码，当我访问该站点时，这个错误出现在一个对话框中。我该如何解决这个问题？

<?php

// Create connection
$con = mysqli_connect("localhost","userdb","userdb","apptestdb");

// Check connection
if (mysqli_connect_errno($con))
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
} 
// This SQL statement selects ALL from the table 'Locations'
$sql = "SELECT * FROM Locations";

// Check if there are results
if ($result = mysqli_query($con, $sql))
{
// If so, then create a results array and a temporary one
// to hold the data
$resultArray = array();
$tempArray = array();

// Loop through each row in the result set
while($row = $result->fetch_object())
{
    // Add each row into our results array
    $tempArray = $row;
    array_push($resultArray, $tempArray);
}

// Finally, encode the array to JSON and output the results
echo json_encode($resultArray);
}

// Close connections
mysqli_close($result);
mysqli_close($con);
?>

Answer 1

你不需要这一行：

mysqli_close($result);

您只需要关闭连接。