1$base_final = preg_replace('/\r|\n/', '', $base64_image);// 一定要用正则式把换行去掉，百度不支持换行

 1<?php
 2//第一步 获取token
 3function request_post($url = '', $param = '') {
 4        if (empty($url) || empty($param)) {
 5            return false;
 6        }
 7        
 8        $postUrl = $url;
 9        $curlPost = $param;
10        $curl = curl_init();//初始化curl
11        curl_setopt($curl, CURLOPT_URL,$postUrl);//抓取指定网页
12        curl_setopt($curl, CURLOPT_HEADER, 0);//设置header
13        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);//要求结果为字符串且输出到屏幕上
14        curl_setopt($curl, CURLOPT_POST, 1);//post提交方式 111
15        curl_setopt($curl, CURLOPT_POSTFIELDS, $curlPost);
16    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER,0);//不检查证书； 不加这一行会返回bool(false)
17        $data = curl_exec($curl);//运行curl
18        curl_close($curl);
19        
20        return $data;
21    }
22 
23  $url = 'https://aip.baidubce.com/oauth/2.0/token';
24    $post_data['grant_type']       = 'client_credentials';
25    $post_data['client_id']      = 'W7Pr4cjQdYLRzsEntHeBFXF4';//你的 Api Key
26    $post_data['client_secret'] = 'GLh84ZjMczUtaeoDEvS93dpDzSQQzxrp';//你的 Secret Key
27    $o = "";
28    foreach ( $post_data as $k => $v ) 
29    {
30    	$o.= "$k=" . urlencode( $v ). "&" ;
31    }
32    $post_data = substr($o,0,-1);
33    $res = request_post($url, $post_data);
34   // var_dump($res);
35   $access_token=json_decode($res,true);
36   $token = $access_token['access_token']; //获取到token  任务结束
37 
38?>
39<?php 
40//第二步，对你要识别的图片进行base64编码。注意不能有base64，头部信息
41 
42/*图片转换为 base64格式编码*/
43$img = './pic/ma.jpg';
44$base64_img = base64EncodeImage($img);
45 
46$base64_string= explode(',', $base64_img); //截取data:image/png;base64, 这个逗号后的字符
47$base_final=$base64_string[1];//存在换行
48$base_final = preg_replace('/\r|\n/', '', $base_final);// 一定要用正则式把换行去掉，百度不支持换行
49//$base_final 就是符合百度base64上传图片格式的字符串了
50function base64EncodeImage ($image_file) {
51    $base64_image = '';
52    $image_info = getimagesize($image_file);
53    $image_data = fread(fopen($image_file, 'r'), filesize($image_file));
54    $base64_image = 'data:' . $image_info['mime'] . ';base64,' . chunk_split(base64_encode($image_data));//可以在这里直接不加xxxbase64，头部信息。
55    return $base64_image;
56}
57?>
58<?php
59//第三步提交人脸识别请求
60function request_post1($url = '', $param = '')
61{
62    if (empty($url) || empty($param)) {
63        return false;
64    }
65 
66    $postUrl = $url;
67    $curlPost = $param;
68    // 初始化curl
69    $curl = curl_init();
70    curl_setopt($curl, CURLOPT_URL, $postUrl);
71    curl_setopt($curl, CURLOPT_HEADER, 0);
72    // 要求结果为字符串且输出到屏幕上
73    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
74    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
75    // post提交方式
76    curl_setopt($curl, CURLOPT_POST, 1);
77    curl_setopt($curl, CURLOPT_POSTFIELDS, $curlPost);
78    // 运行curl
79    $data = curl_exec($curl);
80    curl_close($curl);
81 
82    return $data;
83}
84 
85 
86$url = 'https://aip.baidubce.com/rest/2.0/face/v3/detect?access_token=' . $token;
87//$bodys = "{\"image\":\"027d8308a2ec665acb1bdf63e513bcb9\",\"image_type\":\"FACE_TOKEN\",\"face_field\":\"faceshape,facetype\"}";
88$bodys = "{\"image\":\"".$base_final."\",\"image_type\":\"BASE64\",\"face_field\":\"faceshape,facetype\"}";//base64图片编码
89 
90echo '<br><br>'.$bodys;
91$res = request_post1($url, $bodys);// 根据返回，判断是否包含人脸（动物图片会报检测不到人脸），图片是否正确
92 
93var_dump($res);
94//马化腾的  face_token=34f3873bbe3548e80c73d8bcdd0f6055
95// 马化腾1的 face_token=77d98a34dccd5a9734ee50c24e72fea5
96?>