fix type err

app/Http/Controllers/Admin/MailController.php

@@ -150,6 +150,9 @@ class MailController extends Controller
                     return $this->json(500, '彩金额度不足');
                 }
                 $change_score = $value['number'];
+                if (!preg_match('/^\d+$/', $change_score)) {
+                    return $this->json(500, '金额必须是整数');
+                }
 
                 $value['number'] = $value['number'] * 100;
                 $bonus .= implode(',', $value) . ';';