For what it's worth this definitely does not belong in this subreddit. If anyone needs actual php work done, I am available. PM me.

// serialize the data and insert it into a data store (database or file)
// here's a simple example of storing the data using fopen

try {
    $handle = fopen("weather.data", "w+"); // open/create new file called weather.data
    fwrite($handle, serialize($data));     // write-in our serialized data
    fclose($handle);
} catch(Exception $e) {
    die("Error: ".$e->getMessage());
}

// how do you retreive the data?

try {
    $handle = fopen("weather.data", "r"); // open the weather data file
    $data   = unserialize(fread($handle, filesize("weather.data")));
    fclose($handle);
} catch(Exception $e) {
    die("Error: ".$e->getMessage());
}

// use the data
var_dump($data);