Test Script for implementing touch in google cloud storage php library

5118-touch_throws_warnings.php

<?php
require __DIR__ . '/vendor/autoload.php';
// https://github.com/googleapis/google-cloud-php/issues/5118
// Warning: touch(): Google\Cloud\Storage\StreamWrapper::stream_metadata is not implemented! #5118
// PR raised: https://github.com/googleapis/google-cloud-php/pull/7144

use Google\Cloud\Storage\StorageClient;

$client = new StorageClient(['projectId' => 'XXXXXXXXXXX']);

$client->registerStreamWrapper();

$file = '5118-touch_throws_warnings.txt';
$bucket = $client->bucket('XXXXXXXXXXX');
if ($bucket->object($file)->exists()) {
    $bucket->object($file)->upload('Hello');
    print('File deleted: ' . $file . PHP_EOL);
}

$bucket->upload("Hello".PHP_EOL, ['name' => $file]);

touch('gs://XXXXXXXXXXX/' . $file);

$out = $bucket->object($file)->downloadAsString();

if ($bucket->object($file)->exists()) {
    print('File exists and has: ' . $out . PHP_EOL);
    print('TEST PASSED' . PHP_EOL);
} else {
    print('File does not exist: ' . $file . PHP_EOL);
    print('TEST FAILED' . PHP_EOL);
}