Write to and read from quick #json data store with #PHP

snippet.php

/*
* Takes in a new element to be saved, grabs the data array, appends to it, and re-saves it
*/
function saveData( $dataItem ) {
    $dataArray = summonData();
    array_push($dataArray, $dataItem);
    file_put_contents('./records.json', json_encode($dataArray)); // Overwrites the JSON file
    chmod('./records.json', 0664);
}

/*
* Returns the decoded JSON array as a PHP array
*/
function summonData(){
    $fileName = 'records.json';
    $data = file_get_contents($fileName);
    $decodedData = json_decode($data);
    if( empty($decodedData) ){
        return array();
    } else {
        return $decodedData;
    }
}