基于TP3.2版人脸识别函数-php手册-php.cn

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基于TP3.2版人脸识别函数

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Jun 07, 2016 am 11:41 AM

获取人的脸部特征信息，得到一组特征数组
第一步，在百度开发者中心申请人脸识别接口，具体步骤查询百度
第二步，申请成功后记下API Key和Secret Key
第三步，在框架/Library/Org/Util/目录下建立Baidu.class.php代码如下<?php /********************************************************** *Author: dtnet(presdecoeur@gmail.com) *Time: 2014-6-5下午5:35:13 *File: Bdauth.class.php **********************************************************/ namespace Org\Util; class Baidu { public static $BD_OAUTH2_ENDPOINTS = array ( 'authorize' => 'https://openapi.baidu.com/oauth/2.0/authorize', 'token' => 'https://openapi.baidu.com/oauth/2.0/token', 'logout' => 'https://openapi.baidu.com/connect/2.0/logout', 'face'=>'https://openapi.baidu.com/rest/2.0/media/v1/face/detect' ); protected $clientId; protected $clientSecret; protected $redirectUri; public function __construct($clientId, $clientSecret) { $this->clientId = $clientId; $this->clientSecret = $clientSecret; } public function setRedirectUri($redirectUri) { if (empty ( $redirectUri )) { $redirectUri = $this->getCurrentUrl (); } $this->redirectUri = $redirectUri; return $this; } public function getRedirectUri() { return $this->redirectUri; } public function getLogoutUrl($accessToken, $next = '') { $params = array ('access_token' => $accessToken,'next' => $next ? $next : $this->getCurrentUrl () ); return self::$BD_OAUTH2_ENDPOINTS ['logout'] . '?' . http_build_query ( $params, '', '&' ); } public function getAuthorizeUrl($responseType = 'code', $scope = '', $state = '', $display = 'popup') { $params = array ('client_id' => $this->clientId,'response_type' => $responseType,'redirect_uri' => $this->redirectUri,'scope' => $scope,'state' => $state,'display' => $display ); return self::$BD_OAUTH2_ENDPOINTS ['authorize'] . '?' . http_build_query ( $params, '', '&' ); } public function getAccessTokenByAuthorizationCode($code) { $params = array( 'grant_type' => 'authorization_code', 'code' => $code, 'client_id' => $this->clientId, 'client_secret' => $this->clientSecret, 'redirect_uri' => $this->redirectUri, ); return $this->makeAccessTokenRequest($params); } public function getAccessTokenByClientCredentials($scope = '') { $params = array( 'grant_type' => 'client_credentials', 'client_id' => $this->clientId, 'client_secret' => $this->clientSecret, 'scope' => $scope, ); return $this->makeAccessTokenRequest($params); } public function getAccessTokenByDeveloperCredentials($accessKey, $secretKey) { $params = array( 'grant_type' => 'developer_credentials', 'client_id' => $accessKey, 'client_secret' => $secretKey, ); return $this->makeAccessTokenRequest($params); } public function getAccessTokenByRefreshToken($refreshToken, $scope = '') { $params = array( 'grant_type' => 'refresh_token', 'refresh_token' => $refreshToken, 'client_id' => $this->clientId, 'client_secret' => $this->clientSecret, 'scope' => $scope, ); return $this->makeAccessTokenRequest($params); } public function makeAccessTokenRequest($params) { $result = $this->request(self::$BD_OAUTH2_ENDPOINTS['token'], $params, 'POST'); if ($result) { $result = json_decode($result, true); if (isset($result['error_description'])) { $this->setError($result['error'], $result['error_description']); return false; } return $result; } return false; } public function getAccessFace($imgurl) { $retoken=$this->getAccessTokenByClientCredentials(); $imgurl=urlencode($imgurl); $params = array( 'access_token' => $retoken['access_token'], 'url' => $imgurl, ); return $this->makeAccessFaceRequest($params); } public function makeAccessFaceRequest($params){ $result = $this->request(self::$BD_OAUTH2_ENDPOINTS['face'], $params, 'POST'); if ($result) { $result = json_decode($result, true); if (isset($result['error_description'])) { $this->setError($result['error'], $result['error_description']); return false; } return $result; } return false; } public static function setError($errno, $errmsg) { self::$errno = $errno; self::$errmsg = $errmsg; self::errorLog($errmsg); } /** * Get the gloable errno. * * @return int */ public static function errno() { return self::$errno; } /** * Get the gloable error message. * * @return string */ public static function errmsg() { return self::$errmsg; } /** * Whether to set the debug mode of the Baidu OpenAPI SDK or not. * * @param bool $on true or false * @return void */ public static function setDebugMode($on = true) { self::$isDebug = $on; } /** * Whether the debug mode of the Baidu OpenAPI SDK is on or off. * * @return bool */ public static function isDebugMode() { return self::$isDebug; } /** * Request for a http/https resource * * @param string $url Url to request * @param array $params Parameters for the request * @param string $httpMethod Http method, 'GET' or 'POST' * @param bool $multi Whether it's a multipart POST request * @return string|false Returns string if success, or false if failed */ public static function request($url, $params = array(), $httpMethod = 'GET', $multi = false) { // when using bae(baidu app engine) to deploy the application, // just comment the following line $ch = curl_init(); // when using bae(baidu app engine) to deploy the application, // and uncomment the following two lines //$fetch= new BaeFetchUrl(); //$ch = $fetch->getHandle(); $curl_opts = array( CURLOPT_CONNECTTIMEOUT => 3, CURLOPT_TIMEOUT => 5, CURLOPT_USERAGENT => 'baidu-apiclient-php-2.0', CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1, CURLOPT_RETURNTRANSFER => true, CURLOPT_HEADER => false, CURLOPT_FOLLOWLOCATION => false, ); if (stripos($url, 'https://') === 0) { $curl_opts[CURLOPT_SSL_VERIFYPEER] = false; } if (strtoupper($httpMethod) === 'GET') { $query = http_build_query($params, '', '&'); $delimiter = strpos($url, '?') === false ? '?' : '&'; $curl_opts[CURLOPT_URL] = $url . $delimiter . $query; $curl_opts[CURLOPT_POST] = false; } else { $headers = array(); if ($multi && is_array($params) && !empty($params)) { $body = self::buildHttpMultipartBody($params); $headers[] = 'Content-Type: multipart/form-data; boundary=' . self::$boundary; } else { $body = http_build_query($params, '', '&'); } $curl_opts[CURLOPT_URL] = $url; $curl_opts[CURLOPT_POSTFIELDS] = $body; $curl_opts[CURLOPT_HTTPHEADER] = $headers; } curl_setopt_array($ch, $curl_opts); $result = curl_exec($ch); if ($result === false) { self::setError(curl_errno($ch), curl_error($ch)); curl_close($ch); return false; } elseif (empty($result)) { $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE); if ($http_code != 200) { self::setError($http_code, 'http response status code: ' . $http_code); curl_close($ch); return false; } } curl_close($ch); return $result; } /** * Prints to the error log if you aren't in command line mode. * * @param String log message */ public static function errorLog($msg) { // disable error log if we are running in a CLI environment if (php_sapi_name() != 'cli') { error_log($msg); } // Set the debug mode if you want to see the errors on the page if (self::$isDebug) { echo 'error_log: '.$msg."\n"; } } /** * Generate the signature for passed parameters. * * @param array $params Array of parameters to be signatured * @param string $secret Secret key for signature * @param string $namespace The parameter which will be excluded when calculate the signature * @return string Signature of the parameters */ public static function generateSign($params, $secret, $namespace = 'sign') { $str = ''; ksort($params); foreach ($params as $k => $v) { if ($k != $namespace) { $str .= "$k=$v"; } } $str .= $secret; return md5($str); } /** * Get the url of current page. * * @return string */ public static function getCurrentUrl() { $protocol = 'http://'; if (isset($_SERVER['HTTP_X_FORWARDED_PROTO'])) { $protocol = strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']) . '://'; } elseif (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') { $protocol = 'https://'; } if (isset($_SERVER['HTTP_X_FORWARDED_HOST'])) { $host = $_SERVER['HTTP_X_FORWARDED_HOST']; } else { $host = $_SERVER['HTTP_HOST']; } $currentUrl = $protocol . $host . $_SERVER['REQUEST_URI']; $parts = parse_url($currentUrl); $query = ''; if (!empty($parts['query'])) { // drop known oauth params $params = explode('&', $parts['query']); $retained_params = array(); foreach ($params as $param) { if (self::shouldRetainParam($param)) { $retained_params[] = $param; } } if (!empty($retained_params)) { $query = '?' . implode($retained_params, '&'); } } // use port if non default $port = isset($parts['port']) && (($protocol === 'http://' && $parts['port'] !== 80) || ($protocol === 'https://' && $parts['port'] !== 443)) ? ':' . $parts['port'] : ''; // rebuild return $protocol . $parts['host'] . $port . $parts['path'] . $query; } private static function shouldRetainParam($param) { foreach (self::$DROP_QUERY_PARAMS as $drop_query_param) { if (strpos($param, $drop_query_param . '=') === 0) { return false; } } return true; } /** * Build the multipart body for file uploaded request. * @param array $params Parameters for the request * @return string */ private static function buildHttpMultipartBody($params) { $body = ''; $pairs = array(); self::$boundary = $boundary = md5('BAIDU-PHP-SDK-V2' . microtime(true)); foreach ($params as $key => $value) { if ($value{0} == '@') { $url = ltrim($value, '@'); $content = file_get_contents($url); $array = explode('?', basename($url)); $filename = $array[0]; $body .= '--' . $boundary . "\r\n"; $body .= 'Content-Disposition: form-data; name="' . $key . '"; filename="' . $filename . '"'. "\r\n"; $body .= 'Content-Type: ' . self::detectMimeType($url) . "\r\n\r\n"; $body .= $content . "\r\n"; } else { $body .= '--' . $boundary . "\r\n"; $body .= 'Content-Disposition: form-data; name="' . $key . "\"\r\n\r\n"; $body .= $value . "\r\n"; } } $body .= '--' . $boundary . '--'; return $body; } /** * Tries to detect MIME type of a file * * The method will try to use fileinfo extension if it is available, * deprecated mime_content_type() function in the other case. If neither * works, default 'application/octet-stream' MIME type is returned * * @param string filename * @return string file MIME type */ private static function detectMimeType($filename) { // finfo extension from PECL available if (function_exists('finfo_open')) { if (!isset(self::$fileinfoDb)) { self::$fileinfoDb = finfo_open(FILEINFO_MIME); } if (self::$fileinfoDb) { $info = finfo_file(self::$fileinfoDb, $filename); } } // (deprecated) mime_content_type function available if (empty($info) && function_exists('mime_content_type')) { $info = mime_content_type($filename); } return empty($info)? 'application/octet-stream': $info; } }第四步，在Common目录添加方法代码如下function face($url){ $clientId = '这里用API Key替换'; $clientSecret = '这里用Secret Key替换'; $image = new \Org\Util\Baidu($clientId,$clientSecret); return $image->getAccessFace($url); }第五步，使用函数
$url='http://xxx.xxx.com/xxx/xxx.jpg';
dump(face($url));
成功返回：
array(6) {
["face"] => array(1) {
[0] => array(3) {
["face_id"] => string(32) "xxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
["attribute"] => array(3) {
["gender"] => array(2) {
["confidence"] => string(8) "1.000000"
["value"] => string(6) "female"
}
["smiling"] => array(1) {
["confidence"] => string(8) "0.131746"
}
["face"] => array(2) {
["value"] => string(4) "true"
["confidence"] => string(4) "0.19"
}
}
["position"] => array(6) {
["center"] => array(2) {
["x"] => string(8) "0.653580"
["y"] => string(8) "0.285610"
}
["width"] => string(8) "0.624930"
["height"] => string(8) "0.468110"
["eye_left"] => array(2) {
["x"] => string(8) "0.541770"
["y"] => string(8) "0.115710"
}
["eye_right"] => array(2) {
["x"] => string(8) "0.875140"
["y"] => string(8) "0.186870"
}
["mouth"] => array(2) {
["x"] => string(8) "0.640980"
["y"] => string(8) "0.440060"
}
}
}
}
["img_id"] => string(32) "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
["url"] => string(35) "http://xxx.xxx.com/xxx/xxx.jpg"
["session_id"] => string(32) "xxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
["img_width"] => string(3) "200"
["img_height"] => string(3) "267"

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