Question

我有一个问题。我有一个PHP代码，可以将数据回显给json对象。这是我的代码：

<?php

$host = "localhost"; //Your database host server
$db = "..."; //Your database name
$user = "..."; //Your database user
$pass = "..."; //Your password

$connection = mysql_connect($host, $user, $pass);

//Check to see if we can connect to the server
if(!$connection)
{
    die("Database server connection failed.");  
}
else
{
    //Attempt to select the database
    $dbconnect = mysql_select_db($db, $connection);

    //Check to see if we could select the database
    if(!$dbconnect)
    {
        die("Unable to connect to the specified database!");
    }
    else
    {
        $query = "SELECT * FROM wedstrijden";
        $resultset = mysql_query($query, $connection);

        $records = array();
                    $response = array(); //extra            

        //Loop through all our records and add them to our array
        while($r = mysql_fetch_assoc($resultset))
        {
            $records[] = $r;        
        }

        //Output the data as JSON
        echo json_encode($records);    

    }
} 
?>

这是一个.php文件，它回显了JSON对象。但我想要一个显示JSON对象的.json文件（如results.json文件）。这可能吗？

你能帮助我吗？

提前致谢。

Answer 1

添加json头可能有帮助（在echo片段之前）：

header("content-type:application/json");

Answer 2

使用file_put_contents函数创建/覆盖文件：

file_put_contents('url/to/your/file/records.json', json_encode($records), LOCK_EX);

从php中读取（输出）：

echo file_get_contents('url/to/your/file/records.json');

<强>更新

<?php
....
//Check to see if we can connect to the server
if(!$connection)
{
    die("Database server connection failed.");  
}
else
{
    //Attempt to select the database
    $dbconnect = mysql_select_db($db, $connection);

    //Check to see if we could select the database
    if(!$dbconnect)
    {
        die("Unable to connect to the specified database!");
    }
    else
    {
        $query = "SELECT * FROM wedstrijden";
        $resultset = mysql_query($query, $connection);

        $records = array();
        $response = array(); //extra            

        //Loop through all our records and add them to our array
        while($r = mysql_fetch_assoc($resultset))
        {
            $records[] = $r;        
        }

        //Output the data as JSON
        $json = json_encode($records);    

        //NOTE: FOLDERS 'url' and 'file' SHOULD BE WRITABLE WITH PERMISSIONS - 777
        //IN CASE 'url' FOLDER PLACED IN SERVER'S ROOT
        //IF YOU'RE USING SOME FTP BROWSER CHANGE PERMISSIONS FOR 'url' 
        //FOLDER AND APPLY IT TO ALL ENCLOSED ITEMS
        file_put_contents('url/file/records.json', $json);

    }
} 
?>

Answer 3

file_put_contents应该可以解决问题。

Answer 4

首先，让我们取消MYSQL演讲。它已被弃用，不应再使用，因此请尝试使用MYSQLI或其中一个PDO变体。

其次，听起来你想要一个大的JSON响应。如果是这种情况，请更改此代码：

$query = "SELECT * FROM wedstrijden";
$resultset = mysql_query($query, $connection);
$records = array();
$response = array(); //extra            
//Loop through all our records and add them to our array
while($r = mysql_fetch_assoc($resultset))
    {
        $records[] = $r;        
    }
echo json_encode($records)

更像这样的事情：

$query = "SELECT * FROM wedstrijden";
$resultset = mysql_query($query, $connection);
$records = mysql_fetch_all($resultset);
echo json_encode($records, JSON_PRETTY_PRINT);

PHP将数据回显到.json文件

4 个答案: