Use Google Cloud Vision Sample

use_cloudvision.php

<?php
use Curl\Curl;
$api_url = env('GOOGLE_CLOUDVISION_API_URL');
$api_key = env('GOOGLE_CLOUDVISION_API_KEY');
$curl = new Curl();
$curl_url = $api_url . $api_key;
$curl->setHeader('Content-Type', 'application/json');
$image_path = 'image_path';
$file = file_get_contents($image_path);
$send_json = json_encode([
    "requests" => [
        "image" => [
            "content" => base64_encode($file)
        ],
        "features" => [
        // 物体認識
            [
                "type" => "LABEL_DETECTION",
                "maxResults" => 5
            ],
        ],
        "imageContext" => [
            "languageHints" => "ja"
        ]
    ]
]);
$curl->post($curl_url, $send_json);
$response = $curl->response;
var_dump($response);