调整公共方法3

2 years ago · 756a911a2c
1 changed files with 3 additions and 2 deletions
--- a/app/common.php
+++ b/app/common.php
@ -57,10 +57,11 @@ function checkToken($token): array

 /**
 * 获取随机字符
- * @param $length
+ * @param int $length
 * @return string
 */
-function generate_random_str($length = 8) {
+function generate_random_str(int $length = 8):string
+{
    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $username = '';