基于TP3.2版人脸识别函数
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 <br />
<br>
/**********************************************************<br>
*Author: dtnet(presdecoeur@gmail.com)<br>
*Time: 2014-6-5下午5:35:13<br>
*File: Bdauth.class.php<br>
**********************************************************/<br>
namespace Org\Util;<br>
<br>
class Baidu {<br>
public static $BD_OAUTH2_ENDPOINTS = array (<br>
'authorize' => 'https://openapi.baidu.com/oauth/2.0/authorize',<br>
'token' => 'https://openapi.baidu.com/oauth/2.0/token',<br>
'logout' => 'https://openapi.baidu.com/connect/2.0/logout',<br>
'face'=>'https://openapi.baidu.com/rest/2.0/media/v1/face/detect' <br>
);<br>
protected $clientId;<br>
protected $clientSecret;<br>
protected $redirectUri;<br>
public function __construct($clientId, $clientSecret) {<br>
$this->clientId = $clientId;<br>
$this->clientSecret = $clientSecret;<br>
}<br>
public function setRedirectUri($redirectUri) {<br>
if (empty ( $redirectUri )) {<br>
$redirectUri = $this->getCurrentUrl ();<br>
}<br>
$this->redirectUri = $redirectUri;<br>
return $this;<br>
}<br>
public function getRedirectUri() {<br>
return $this->redirectUri;<br>
}<br>
public function getLogoutUrl($accessToken, $next = '') {<br>
$params = array ('access_token' => $accessToken,'next' => $next ? $next : $this->getCurrentUrl () <br>
);<br>
return self::$BD_OAUTH2_ENDPOINTS ['logout'] . '?' . http_build_query ( $params, '', '&' );<br>
}<br>
public function getAuthorizeUrl($responseType = 'code', $scope = '', $state = '', $display = 'popup') {<br>
$params = array ('client_id' => $this->clientId,'response_type' => $responseType,'redirect_uri' => $this->redirectUri,'scope' => $scope,'state' => $state,'display' => $display <br>
);<br>
return self::$BD_OAUTH2_ENDPOINTS ['authorize'] . '?' . http_build_query ( $params, '', '&' );<br>
}<br>
public function getAccessTokenByAuthorizationCode($code)<br>
{<br>
$params = array(<br>
'grant_type' => 'authorization_code',<br>
'code' => $code,<br>
'client_id' => $this->clientId,<br>
'client_secret' => $this->clientSecret,<br>
'redirect_uri' => $this->redirectUri,<br>
);<br>
return $this->makeAccessTokenRequest($params);<br>
}<br>
public function getAccessTokenByClientCredentials($scope = '')<br>
{<br>
$params = array(<br>
'grant_type' => 'client_credentials',<br>
'client_id' => $this->clientId,<br>
'client_secret' => $this->clientSecret,<br>
'scope' => $scope,<br>
);<br>
return $this->makeAccessTokenRequest($params);<br>
}<br>
public function getAccessTokenByDeveloperCredentials($accessKey, $secretKey)<br>
{<br>
$params = array(<br>
'grant_type' => 'developer_credentials',<br>
'client_id' => $accessKey,<br>
'client_secret' => $secretKey,<br>
);<br>
return $this->makeAccessTokenRequest($params);<br>
}<br>
public function getAccessTokenByRefreshToken($refreshToken, $scope = '')<br>
{<br>
$params = array(<br>
'grant_type' => 'refresh_token',<br>
'refresh_token' => $refreshToken,<br>
'client_id' => $this->clientId,<br>
'client_secret' => $this->clientSecret,<br>
'scope' => $scope,<br>
);<br>
return $this->makeAccessTokenRequest($params);<br>
}<br>
public function makeAccessTokenRequest($params)<br>
{<br>
$result = $this->request(self::$BD_OAUTH2_ENDPOINTS['token'], $params, 'POST');<br>
if ($result) {<br>
$result = json_decode($result, true);<br>
if (isset($result['error_description'])) {<br>
$this->setError($result['error'], $result['error_description']);<br>
return false;<br>
}<br>
return $result;<br>
}<br>
<br>
return false;<br>
}<br>
<br>
public function getAccessFace($imgurl) {<br>
<br>
$retoken=$this->getAccessTokenByClientCredentials();<br>
$imgurl=urlencode($imgurl);<br>
$params = array(<br>
'access_token' => $retoken['access_token'],<br>
'url' => $imgurl,<br>
);<br>
<br>
return $this->makeAccessFaceRequest($params);<br>
}<br>
<br>
public function makeAccessFaceRequest($params){<br>
$result = $this->request(self::$BD_OAUTH2_ENDPOINTS['face'], $params, 'POST');<br>
if ($result) {<br>
$result = json_decode($result, true);<br>
if (isset($result['error_description'])) {<br>
$this->setError($result['error'], $result['error_description']);<br>
return false;<br>
}<br>
return $result;<br>
} <br>
return false; <br>
}<br>
<br>
<br>
public static function setError($errno, $errmsg)<br>
{<br>
self::$errno = $errno;<br>
self::$errmsg = $errmsg;<br>
self::errorLog($errmsg);<br>
}<br>
<br>
/**<br>
* Get the gloable errno.<br>
*<br>
* @return int<br>
*/<br>
public static function errno()<br>
{<br>
return self::$errno;<br>
}<br>
<br>
/**<br>
* Get the gloable error message.<br>
*<br>
* @return string<br>
*/<br>
public static function errmsg()<br>
{<br>
return self::$errmsg;<br>
}<br>
<br>
/**<br>
* Whether to set the debug mode of the Baidu OpenAPI SDK or not.<br>
*<br>
* @param bool $on true or false<br>
* @return void<br>
*/<br>
public static function setDebugMode($on = true)<br>
{<br>
self::$isDebug = $on;<br>
}<br>
<br>
/**<br>
* Whether the debug mode of the Baidu OpenAPI SDK is on or off.<br>
*<br>
* @return bool<br>
*/<br>
public static function isDebugMode()<br>
{<br>
return self::$isDebug;<br>
}<br>
/**<br>
* Request for a http/https resource<br>
*<br>
* @param string $url Url to request<br>
* @param array $params Parameters for the request<br>
* @param string $httpMethod Http method, 'GET' or 'POST'<br>
* @param bool $multi Whether it's a multipart POST request<br>
* @return string|false Returns string if success, or false if failed<br>
*/<br>
public static function request($url, $params = array(), $httpMethod = 'GET', $multi = false)<br>
{<br>
// when using bae(baidu app engine) to deploy the application,<br>
// just comment the following line<br>
$ch = curl_init();<br>
// when using bae(baidu app engine) to deploy the application,<br>
// and uncomment the following two lines<br>
//$fetch= new BaeFetchUrl();<br>
//$ch = $fetch->getHandle();<br>
<br>
$curl_opts = array(<br>
CURLOPT_CONNECTTIMEOUT => 3,<br>
CURLOPT_TIMEOUT => 5,<br>
CURLOPT_USERAGENT => 'baidu-apiclient-php-2.0',<br>
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,<br>
CURLOPT_RETURNTRANSFER => true,<br>
CURLOPT_HEADER => false,<br>
CURLOPT_FOLLOWLOCATION => false,<br>
);<br>
<br>
if (stripos($url, 'https://') === 0) {<br>
$curl_opts[CURLOPT_SSL_VERIFYPEER] = false;<br>
}<br>
<br>
if (strtoupper($httpMethod) === 'GET') {<br>
$query = http_build_query($params, '', '&');<br>
$delimiter = strpos($url, '?') === false ? '?' : '&';<br>
$curl_opts[CURLOPT_URL] = $url . $delimiter . $query;<br>
$curl_opts[CURLOPT_POST] = false;<br>
} else {<br>
$headers = array();<br>
if ($multi && is_array($params) && !empty($params)) {<br>
$body = self::buildHttpMultipartBody($params);<br>
$headers[] = 'Content-Type: multipart/form-data; boundary=' . self::$boundary;<br>
} else {<br>
$body = http_build_query($params, '', '&');<br>
}<br>
$curl_opts[CURLOPT_URL] = $url;<br>
$curl_opts[CURLOPT_POSTFIELDS] = $body;<br>
$curl_opts[CURLOPT_HTTPHEADER] = $headers;<br>
}<br>
<br>
curl_setopt_array($ch, $curl_opts);<br>
$result = curl_exec($ch);<br>
<br>
if ($result === false) {<br>
self::setError(curl_errno($ch), curl_error($ch));<br>
curl_close($ch);<br>
return false;<br>
} elseif (empty($result)) {<br>
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);<br>
if ($http_code != 200) {<br>
self::setError($http_code, 'http response status code: ' . $http_code);<br>
curl_close($ch);<br>
return false;<br>
}<br>
}<br>
<br>
curl_close($ch);<br>
<br>
return $result;<br>
}<br>
<br>
/**<br>
* Prints to the error log if you aren't in command line mode.<br>
*<br>
* @param String log message<br>
*/<br>
public static function errorLog($msg)<br>
{<br>
// disable error log if we are running in a CLI environment<br>
if (php_sapi_name() != 'cli') {<br>
error_log($msg);<br>
}<br>
<br>
// Set the debug mode if you want to see the errors on the page<br>
if (self::$isDebug) {<br>
echo 'error_log: '.$msg."\n";<br>
}<br>
}<br>
<br>
/**<br>
* Generate the signature for passed parameters.<br>
*<br>
* @param array $params Array of parameters to be signatured<br>
* @param string $secret Secret key for signature<br>
* @param string $namespace The parameter which will be excluded when calculate the signature<br>
* @return string Signature of the parameters<br>
*/<br>
public static function generateSign($params, $secret, $namespace = 'sign')<br>
{<br>
$str = '';<br>
ksort($params);<br>
foreach ($params as $k => $v) {<br>
if ($k != $namespace) {<br>
$str .= "$k=$v";<br>
}<br>
}<br>
$str .= $secret;<br>
return md5($str);<br>
}<br>
<br>
/**<br>
* Get the url of current page.<br>
*<br>
* @return string<br>
*/<br>
public static function getCurrentUrl()<br>
{<br>
$protocol = 'http://';<br>
if (isset($_SERVER['HTTP_X_FORWARDED_PROTO'])) {<br>
$protocol = strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']) . '://';<br>
} elseif (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') {<br>
$protocol = 'https://';<br>
}<br>
<br>
if (isset($_SERVER['HTTP_X_FORWARDED_HOST'])) {<br>
$host = $_SERVER['HTTP_X_FORWARDED_HOST'];<br>
} else {<br>
$host = $_SERVER['HTTP_HOST'];<br>
}<br>
<br>
$currentUrl = $protocol . $host . $_SERVER['REQUEST_URI'];<br>
$parts = parse_url($currentUrl);<br>
<br>
$query = '';<br>
if (!empty($parts['query'])) {<br>
// drop known oauth params<br>
$params = explode('&', $parts['query']);<br>
$retained_params = array();<br>
foreach ($params as $param) {<br>
if (self::shouldRetainParam($param)) {<br>
$retained_params[] = $param;<br>
}<br>
}<br>
<br>
if (!empty($retained_params)) {<br>
$query = '?' . implode($retained_params, '&');<br>
}<br>
}<br>
<br>
// use port if non default<br>
$port = isset($parts['port']) && (($protocol === 'http://' && $parts['port'] !== 80) ||<br>
($protocol === 'https://' && $parts['port'] !== 443)) ? ':' . $parts['port'] : '';<br>
<br>
// rebuild<br>
return $protocol . $parts['host'] . $port . $parts['path'] . $query;<br>
}<br>
<br>
private static function shouldRetainParam($param)<br>
{<br>
foreach (self::$DROP_QUERY_PARAMS as $drop_query_param) {<br>
if (strpos($param, $drop_query_param . '=') === 0) {<br>
return false;<br>
}<br>
}<br>
<br>
return true;<br>
}<br>
<br>
/**<br>
* Build the multipart body for file uploaded request.<br>
* @param array $params Parameters for the request<br>
* @return string<br>
*/<br>
private static function buildHttpMultipartBody($params)<br>
{<br>
$body = '';<br>
$pairs = array();<br>
self::$boundary = $boundary = md5('BAIDU-PHP-SDK-V2' . microtime(true));<br>
<br>
foreach ($params as $key => $value) {<br>
if ($value{0} == '@') {<br>
$url = ltrim($value, '@');<br>
$content = file_get_contents($url);<br>
$array = explode('?', basename($url));<br>
$filename = $array[0];<br>
<br>
$body .= '--' . $boundary . "\r\n";<br>
$body .= 'Content-Disposition: form-data; name="' . $key . '"; filename="' . $filename . '"'. "\r\n";<br>
$body .= 'Content-Type: ' . self::detectMimeType($url) . "\r\n\r\n";<br>
$body .= $content . "\r\n";<br>
} else {<br>
$body .= '--' . $boundary . "\r\n";<br>
$body .= 'Content-Disposition: form-data; name="' . $key . "\"\r\n\r\n";<br>
$body .= $value . "\r\n";<br>
}<br>
}<br>
<br>
$body .= '--' . $boundary . '--';<br>
return $body;<br>
}<br>
<br>
/**<br>
* Tries to detect MIME type of a file<br>
*<br>
* The method will try to use fileinfo extension if it is available,<br>
* deprecated mime_content_type() function in the other case. If neither<br>
* works, default 'application/octet-stream' MIME type is returned<br>
*<br>
* @param string filename<br>
* @return string file MIME type<br>
*/<br>
private static function detectMimeType($filename)<br>
{<br>
// finfo extension from PECL available<br>
if (function_exists('finfo_open')) {<br>
if (!isset(self::$fileinfoDb)) {<br>
self::$fileinfoDb = finfo_open(FILEINFO_MIME);<br>
}<br>
if (self::$fileinfoDb) {<br>
$info = finfo_file(self::$fileinfoDb, $filename);<br>
}<br>
}<br>
// (deprecated) mime_content_type function available<br>
if (empty($info) && function_exists('mime_content_type')) {<br>
$info = mime_content_type($filename);<br>
}<br>
return empty($info)? 'application/octet-stream': $info;<br>
}<br>
}第四步，在Common目录添加方法代码如下function face($url){<br>
$clientId = '这里用API Key替换';<br>
$clientSecret = '这里用Secret Key替换';<br>
$image = new \Org\Util\Baidu($clientId,$clientSecret);<br>
return $image->getAccessFace($url);<br>
}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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