Saving data in a JSON file with WordPress AJAX - json

Question

So I have a wordpress Ajax function that retrieves MySQL data as JSON and logs it. However I want to not directly get the data back on the page where my AJAX function is, but I want to save the data to a JSON file instead, so I can use it for a wider variety of purposes.
Here is my AJAX function:
$.get(
ajax_url,
data,
function(data) { // AJAX callback
fill_json(data);
}// End AJAX callback
);
The fill_json() is a function to echo the JSON data in a table I wrote myself.
Now here is what happens inside my AJAX hook:
$sql_search = $wpdb->get_results(" a complicated mysql search here ");
if(!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
$result = json_encode($result);
echo $result;
} else {
header("Location: ".$_SERVER["HTTP_REFERER"]);
}
underneath echo $result; in my Ajax hook I tried the following piece of code, but I don't know how I can see if it worked or not:
$json_path = "/var/www/vhosts/jtc.ae/httpdocs/pre/wp/wp-content/themes/Amazing_japan_HP/new/search.json";
file_put_contents($json_path, $result);
My question:
Is this the correct way to save the data to a JSON file, and how can I get this data on my main page then?
Extra question: Will saving $result to a JSON file conflict with multiple users using the AJAX at the same time?

Answer 1

All you did is right .. please make sure the steps below :
Pass write permission to the folder /new inside "Amazing_japan_HP" (chmod -R 666 /new)
To save the data in file use file_put_contents($file, $current);
To get the data from the file use $current = file_get_contents($file);
For all newly created files try to use umask. It provides required permission to the files for writing content in it
umask() sets PHP's umask to mask & 0777 and returns the old umask.
When PHP is being used as a server module, the umask is restored when
each request is finished.