在目录php上写json

Question

这听起来有点基本，但我不知道该怎么做， 我能够编写json文件，但我需要将它存储在特定的目录中。

               $theColor = array('color' => 'red');
               $fp = fopen('color.json', 'w');
               fwrite($fp, json_encode($theColor));
               fclose($fp);

现在我可以写这个，但文件出现在root上。我正在使用wordpress。我需要将它传输到特定文件夹或我的驱动器C：/

任何想法＆gt;

Answer 1

替换以下行：

$fp = fopen('color.json', 'w');

与

$fp = fopen('/path/to/directory/color.json', 'w');

确保您对/path/to/directory/拥有正确的权利。

修改
正如你的评论中所述。下载文件的代码。

$data = "/path/to/directory/color.json";
header("Content-Type: application/json");
header('Pragma: public');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Cache-Control: private', false);
header('Content-Disposition: attachment; filename="color.json"');
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . filesize($data));
readfile($data);
exit;

这应该会为您提供众所周知的弹出窗口。如果没有，请尝试首先将数据变量更改为file_get_contents("/path/to/directory/color.json")

或作为一项功能：

/**
 * This method sets generates the headers for a file download and sends the file. PHP is exited after this function
 *
 * @param string $fileName    The name of the file, as displayed in the download popup
 * @param string $data        The path to the file, or the contents of the file
 * @param string $contentType The content type of the file
 * @param bool $file          Whether or not $data is a the path to a file, or the file data.<br />
 *                            True means $data contains the path to the file<br />
 *                            False when $data is a the data as a string
 *
 * @return void Exits PHP
 */
function outputForDownload($fileName, $data, $contentType, $file = true)
{
    header("Content-Type: {$contentType}");
    header('Pragma: public');
    header('Expires: 0');
    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
    header('Cache-Control: private', false);
    header('Content-Disposition: attachment; filename="' . $fileName . '"');
    header('Content-Transfer-Encoding: binary');
    if ($file === true) {
        header('Content-Length: ' . filesize($data));
        readfile($data);
    } else {
        header('Content-Length: ' . mb_strlen($data));
        echo $data;
    }
    exit;
}