过滤后缀重复

@@ -538,6 +538,15 @@ class UpdateSeoTdk extends Command
                 return $str;
             $keyword = array_slice($fix_keyword, 0, $num);
             $str = implode(", ", $keyword);
+
+            // 前后缀内部去重
+            foreach ($keyword as $k=>$v){
+                $tmp = rtrim($v, 's');
+                if (substr_count($str, $tmp) > 1) {
+                    unset($keyword[$k]);
+                    $str = implode(", ", $keyword);
+                }
+            }
         }
         return $str;
     }

@@ -1104,6 +1104,14 @@ function getPrefixKeyword($project_id, $type, $num)
             return $str;
         $keyword = array_slice($fix_keyword, 0, $num);
         $str = implode(", ", $keyword);
+
+        foreach ($keyword as $k=>$v){
+            $tmp = rtrim($v, 's');
+            if (substr_count($str, $tmp) > 1) {
+                unset($keyword[$k]);
+                $str = implode(", ", $keyword);
+            }
+        }
     }
     return $str;
 }