Major speed improvement in function random_string() for cases 'alpha', 'alnum', 'numeric' and 'nozero'
diff --git a/system/helpers/string_helper.php b/system/helpers/string_helper.php
index 9fa69f4..dd8ffad 100644
--- a/system/helpers/string_helper.php
+++ b/system/helpers/string_helper.php
@@ -215,12 +215,9 @@
case 'nozero' : $pool = '123456789';
break;
}
-
- $str = '';
- for ($i=0; $i < $len; $i++)
- {
- $str .= substr($pool, mt_rand(0, strlen($pool) -1), 1);
- }
+
+ $str = substr(str_shuffle(str_repeat($pool, ceil($len/strlen($pool)))),0,$len);
+
return $str;
break;
case 'unique' :