From fb6a1d1f5119b73e227c17c825202e1a5e135244 Mon Sep 17 00:00:00 2001
From: Laurent Destailleur <eldy@destailleur.fr>
Date: Sun, 31 Oct 2021 16:56:38 +0100
Subject: [PATCH] FIX #19210

---
 htdocs/core/lib/functions.lib.php | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index d659c2b1916..eae8546a338 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -2266,6 +2266,11 @@ function dol_print_date($time, $format = '', $tzoutput = 'auto', $outputlangs =
 {
 	global $conf, $langs;
 
+	// If date undefined or "", we return ""
+	if (dol_strlen($time) == 0) {
+		return ''; // $time=0 allowed (it means 01/01/1970 00:00:00)
+	}
+
 	if ($tzoutput === 'auto') {
 		$tzoutput = (empty($conf) ? 'tzserver' : (isset($conf->tzuserinputkey) ? $conf->tzuserinputkey : 'tzserver'));
 	}
@@ -2289,7 +2294,7 @@ function dol_print_date($time, $format = '', $tzoutput = 'auto', $outputlangs =
 					$user_date_tz = new DateTimeZone($offsettzstring);
 					$user_dt = new DateTime();
 					$user_dt->setTimezone($user_date_tz);
-					$user_dt->setTimestamp(($tzoutput == 'tzuser' || empty($time)) ? dol_now() : $time);
+					$user_dt->setTimestamp($tzoutput == 'tzuser' ? dol_now() : (int) $time);
 					$offsettz = $user_dt->getOffset();
 				} else {	// old method (The 'tzuser' was processed like the 'tzuserrel')
 					$offsettz = (empty($_SESSION['dol_tz']) ? 0 : $_SESSION['dol_tz']) * 60 * 60; // Will not be used anymore
@@ -2357,11 +2362,6 @@ function dol_print_date($time, $format = '', $tzoutput = 'auto', $outputlangs =
 		$format = str_replace('yyyy', 'yy', $format);
 	}
 
-	// If date undefined or "", we return ""
-	if (dol_strlen($time) == 0) {
-		return ''; // $time=0 allowed (it means 01/01/1970 00:00:00)
-	}
-
 	// Clean format
 	if (preg_match('/%b/i', $format)) {		// There is some text to translate
 		// We inhibate translation to text made by strftime functions. We will use trans instead later.