利用PHP与七牛云存储接口实现图片的人脸识别和图像搜索的方法

require_once('qiniu/autoload.php');

use QiniuAuth;
use QiniuStorageUploadManager;

$accessKey = '<your-access-key>';
$secretKey = '<your-secret-key>';
$bucket = '<your-bucket-name>';

$auth = new Auth($accessKey, $secretKey);

$token = $auth->uploadToken($bucket);

$uploadMgr = new UploadManager();

list($ret, $err) = $uploadMgr->putFile($token, 'uploadKey', 'localFilePath');

if ($err !== null) {
    exit('上传失败：' . $err);
}

$accessKeyId = '<your-access-key>';
$accessKeySecret = '<your-access-key-secret>';
$url = 'https://api.qiniu.com/face/detection/detect';

$body = array(
    'data' => array(
        'uri' => $ret['key'],
    ),
);

$content = json_encode($body);

$timestamp = time();

$signStr = $url . "
" . $content . "
" . $timestamp;

$sign = hash_hmac('sha1', $signStr, $accessKeySecret);

$header = array(
    'AccessKey: ' . $accessKeyId,
    'Content-Type: application/json',
    'Timestamp: ' . $timestamp,
    'Sign: ' . $sign,
);

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $content);

$response = curl_exec($ch);

if (curl_errno($ch) !== 0) {
    exit('请求失败：' . curl_error($ch));
}

curl_close($ch);

$result = json_decode($response, true);

if ($result['code'] !== 0) {
    exit('人脸识别失败：' . $result['message']);
}

$faces = $result['result']['faces'];

foreach ($faces as $face) {
    $position = $face['position'];
    $age = $face['age'];
    $gender = $face['gender'];
    //....
}

$accessKeyId = '<your-access-key>';
$accessKeySecret = '<your-access-key-secret>';
$url = 'https://api.qiniu.com/image/v2/search';

$body = array(
    'data' => array(
        'uri' => $ret['key'],
        'limit' => 10, // 设置返回结果的数量
    ),
);

$content = json_encode($body);

$timestamp = time();

$signStr = $url . "
" . $content . "
" . $timestamp;

$sign = hash_hmac('sha1', $signStr, $accessKeySecret);

$header = array(
    'AccessKey: ' . $accessKeyId,
    'Content-Type: application/json',
    'Timestamp: ' . $timestamp,
    'Sign: ' . $sign,
);

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $content);

$response = curl_exec($ch);

if (curl_errno($ch) !== 0) {
    exit('请求失败：' . curl_error($ch));
}

curl_close($ch);

$result = json_decode($response, true);

if ($result['code'] !== 0) {
    exit('图像搜索失败：' . $result['message']);
}

$items = $result['result']['items'];

foreach ($items as $item) {
    $score = $item['score'];
    $key = $item['key'];
    //....
}