update code toward php8 compliance

htdocs/core/tpl/card_presend.tpl.php

@@ -63,7 +63,7 @@ if ($action == 'presend') {
 	// Define output language
 	$outputlangs = $langs;
 	$newlang = '';
-	if (!empty($conf->global->MAIN_MULTILANGS) && empty($newlang)) {
+	if (getDolGlobalInt('MAIN_MULTILANGS') && empty($newlang)) {
 		$newlang = $object->thirdparty->default_lang;
 		if (GETPOST('lang_id', 'aZ09')) {
 			$newlang = GETPOST('lang_id', 'aZ09');

htdocs/core/tpl/objectline_create.tpl.php

@@ -763,7 +763,7 @@ if (!empty($usemargins) && $user->rights->margins->creer) {
 						}
 						<?php
 						if (!empty($conf->global->PRODUIT_AUTOFILL_DESC) && $conf->global->PRODUIT_AUTOFILL_DESC == 1) {
-							if (!empty($conf->global->MAIN_MULTILANGS) && !empty($conf->global->PRODUIT_TEXTS_IN_THIRDPARTY_LANGUAGE)) { ?>
+							if (getDolGlobalInt('MAIN_MULTILANGS') && !empty($conf->global->PRODUIT_TEXTS_IN_THIRDPARTY_LANGUAGE)) { ?>
 						var proddesc = data.desc_trans;
 								<?php
 							} else { ?>

htdocs/datapolicy/admin/setupmail.php

@@ -118,7 +118,7 @@ print '<form method="post" action="'.$_SERVER["PHP_SELF"].'?l='.$l.'">';
 print '<input type="hidden" name="token" value="'.newToken().'">';
 print '<input type="hidden" name="action" value="setvalue">';
 print '<table>';
-if (!empty($conf->global->MAIN_MULTILANGS)) {
+if (getDolGlobalInt('MAIN_MULTILANGS')) {
 	print '<tr><td>'.$form->editfieldkey('DefaultLang', 'default_lang', '', null, 0).'</td><td colspan="3" class="maxwidthonsmartphone">'."\n";
 	print img_picto('', 'language', 'class="pictofixedwidth"');
 	print $formadmin->select_language((GETPOST('l') ? GETPOST('l') : $langs->defaultlang), 'default_lang', 0, 0, 1, 0, 0, 'maxwidth200onsmartphone');