PHP の Rest で Cloud Firestore のデータを作成 (Create)

firestore_create_rest.php

#! /usr/bin/php
<?php
//
//  firestore_create_rest.php
//
//                  Feb/16/2020
//
// ------------------------------------------------------------------
include('Requests/library/Requests.php');
include("get_token.php");
//
// ------------------------------------------------------------------
function add_data_proc($url_base,$headers,$key,$name,$population,$date_mod)
{
$url = $url_base . "?documentId=" . $key;

$update01 = array ();
$update01["fields"] = array ();
$update01["fields"]["name"] = ["stringValue"=> $name];
$update01["fields"]["population"] = ["integerValue"=> $population];
$update01["fields"]["date_mod"] = [ "timestampValue"=> $date_mod];

$str_json = json_encode ($update01);
print($str_json . "\n");
$request = Requests::post($url, $headers, $str_json);
var_dump($request->status_code);

$rvalue = $request->body;

print($rvalue);
}

// ------------------------------------------------------------------
fputs (STDERR,"*** 開始 ***\n");
Requests::register_autoloader();
//

$token = get_token_proc();
//
$project = 'project-jan25-2020';
$headers = array('Authorization' => 'Bearer ' . $token,
    'Content-Type' => 'application/json');
$options = array();
$url_base = "https://firestore.googleapis.com/v1/projects/" . $project . "/databases/(default)/documents/cities";


add_data_proc($url_base,$headers,'t0921','宇都宮',38921,"2010-10-5T00:15:00Z");
add_data_proc($url_base,$headers,'t0922','小山',45921,"2010-10-9T00:14:00Z");
add_data_proc($url_base,$headers,'t0923','佐野',76921,"2010-11-7T00:16:00Z");
add_data_proc($url_base,$headers,'t0924','足利',94921,"2010-12-15T00:12:00Z");
add_data_proc($url_base,$headers,'t0925','日光',27921,"2010-8-2T00:11:00Z");

fputs (STDERR,"*** 終了 ***\n");
// ------------------------------------------------------------------
?>

get_token.php

<?php
//
//  get_token.php
//
//                  Feb/03/2020
//
// ------------------------------------------------------------------
function get_token_proc ()
{
    $token = '';
    $command = 'gcloud auth application-default print-access-token';

    try
        {
        exec($command, $out, $ret);
        $token = $out[0];
        }
    catch (Exception $ee)
        {
        print("*** error *** exec ***\n");
        print('Error:'.$ee->getMessage());
        }

    return  $token;
}

// ------------------------------------------------------------------
?>

実行コマンド

export GOOGLE_APPLICATION_CREDENTIALS="***.json"
./firestore_create_rest.php