PHP の Rest で Cloud Firestore のデータを読む (Read)

firestore_read_rest.php

#! /usr/bin/php
<?php
//
//  firestore_read_rest.php
//
//                  Feb/03/2020
//
// ------------------------------------------------------------------
include('Requests/library/Requests.php');
include("get_token.php");
//
// ------------------------------------------------------------------

// ------------------------------------------------------------------
fputs (STDERR,"*** 開始 ***\n");
Requests::register_autoloader();
//
$token = get_token_proc();
// print( $token );
//
$project = 'project-jan25-2020';
$headers = array('Authorization' => 'Bearer ' . $token);
$options = array();
$url = "https://firestore.googleapis.com/v1/projects/" . $project . "/databases/(default)/documents/cities";

$request = Requests::get($url, $headers);
var_dump($request->status_code);
// var_dump($request->body);

$json_string = $request->body;
$dict_aa = json_decode ($json_string,true);
// var_dump($dict_aa["documents"]);

$array_aa = $dict_aa["documents"];
foreach ($array_aa as $unit_aa)
    {
    $str_aa = $unit_aa["name"];
    $tt = explode("/",$str_aa);
    $length = count($tt);
    $key = $tt[$length - 1];
    $name = $unit_aa["fields"]["name"]["stringValue"];
    $population = $unit_aa["fields"]["population"]["integerValue"];
    $date_mod = $unit_aa["fields"]["date_mod"]["timestampValue"];
//
    $str_out = $key . "\t" . $name . "\t" . $population . "\t" . $date_mod;
    print($str_out . "\n");
    }

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

get_token.php はこちら
PHP の Rest で Cloud Firestore のデータを作成 (Create)

実行コマンド

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