Merge pull request mewebstudio#221 from bernhardh/master

Fix too long cache key issue for memcached

src/Captcha.php

@@ -294,7 +294,7 @@ public function create(string $config = 'default', bool $api = false)
         }
 
         if ($api) {
-            Cache::put('captcha_record_' . $generator['key'], $generator['value'], $this->expire);
+            Cache::put($this->get_cache_key($generator['key']), $generator['value'], $this->expire);
         }
 
         return $api ? [
@@ -483,6 +483,16 @@ public function check(string $value): bool
 
         return $check;
     }
+
+    /**
+     * Returns the md5 short version of the key for cache
+     *
+     * @param string $key
+     * @return string
+     */
+    protected function get_cache_key($key) {
+        return 'captcha_' . md5($key);
+    }    
 
     /**
      * Captcha check
@@ -494,7 +504,7 @@ public function check(string $value): bool
      */
     public function check_api($value, $key, $config = 'default'): bool
     {
-        if (!Cache::pull('captcha_record_' . $key)) {
+        if (!Cache::pull($this->get_cache_key($key))) {
             return false;
         }