初始上传

app/api/controller/Captcha.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace app\api\controller;
+
+use think\captcha\facade\Captcha as ThinkCaptcha;
+use think\facade\Cache;
+
+class Captcha extends BaseApi
+{
+    /**
+     * 验证码
+     */
+    public function captcha()
+    {
+        if (isset($this->params[ 'captcha_id' ]) && !empty($this->params[ 'captcha_id' ])) {
+            Cache::delete($this->params[ 'captcha_id' ]);
+        }
+
+        $captcha_data = ThinkCaptcha::create(null, true);
+        $captcha_id = md5(uniqid(null, true));
+        // 验证码10分钟有效
+        Cache::set($captcha_id, $captcha_data[ 'code' ], 600);
+        return $this->response($this->success([ 'id' => $captcha_id, 'img' => $captcha_data[ 'img' ] ]));
+    }
+
+    /**
+     * 检测验证码
+     * @param boolean $snapchat 阅后即焚
+     */
+    public function checkCaptcha($snapchat = true) : array
+    {
+        if (!isset($this->params[ 'captcha_id' ]) || empty($this->params[ 'captcha_id' ])) {
+            return $this->error('', 'REQUEST_CAPTCHA_ID');
+        }
+
+        if (!isset($this->params[ 'captcha_code' ]) || empty($this->params[ 'captcha_code' ])) {
+            return $this->error('', 'REQUEST_CAPTCHA_CODE');
+        }
+
+        if ($snapchat) $captcha_data = Cache::pull($this->params[ 'captcha_id' ]);
+        else $captcha_data = Cache::get($this->params[ 'captcha_id' ]);
+        if (empty($captcha_data)) return $this->error('', 'CAPTCHA_FAILURE');
+
+        if ($this->params[ 'captcha_code' ] != $captcha_data) return $this->error('', 'CAPTCHA_ERROR');
+
+        return $this->success();
+    }
+
+}