php 8. strpos(): Passing null to parameter #1 ($haystack) of type string is deprecate...

diff --git a/includes/date_functions.inc b/includes/date_functions.inc
index f80bb2713e2564ef1597cf5d7818ea03ffbb4fa7..2538f79d65f3edc24c031ae23f176a5359e10592 100644 (file)
--- a/includes/date_functions.inc
+++ b/includes/date_functions.inc
@@ -350,7 +350,8 @@ function sql2date($date_)
        global $SysPrefs;
 
        //for MySQL dates are in the format YYYY-mm-dd
-
+       if ($date_ == null)
+               return "";
        if (strpos($date_, "/")) 
        { // In MySQL it could be either / or -
                list($year, $month, $day) = explode("/", $date_);