php 8.1 changes (#6721)

* Update call_flows.php

* Update call_flow_edit.php

* Update call_forward.php

* Update call_forward_edit.php

* Update call_recordings.php

* Update conference_centers.php

* Update default_settings.php

* Update default_setting_edit.php

* Update access_controls.php

* Update number_translations.php

* Update number_translation_edit.php

* Update setting_edit.php

* Update bridges.php

* Update bridge_edit.php

* Update call_broadcast_edit.php

* Update call_broadcast.php

* Update call_block.php

* Update call_broadcast_edit.php

* Update call_center_agent_edit.php

* Update call_center_agent_status.php

* Update call_recordings.php

core/default_settings/default_setting_edit.php

@@ -86,7 +86,7 @@
 
 //build the query string
 	$query_string = '';
-	if ($search != '') {
+	if (!empty($search)) {
 		$query_string .= 'search='.urlencode($search);
 	}
 	if ($default_setting_category != '') {
@@ -95,7 +95,7 @@
 	}
 
 //process the http post
-	if (count($_POST) > 0 && empty($_POST["persistformvar"])) {
+	if (!empty($_POST) && empty($_POST["persistformvar"])) {
 
 		//set the default_setting_uuid
 			if ($action == "update") {

core/default_settings/default_settings.php

@@ -113,7 +113,7 @@
 
 //get the count
 	$sql = "select count(default_setting_uuid) from v_default_settings ";
-	if (!empty($search) && !empty($search)) {
+	if (!empty($search)) {
 		$sql .= "where (";
 		$sql .= "	lower(default_setting_category) like :search ";
 		$sql .= "	or lower(default_setting_subcategory) like :search ";
@@ -135,7 +135,7 @@
 	$sql = "select default_setting_uuid, default_setting_category, default_setting_subcategory, default_setting_name, ";
 	$sql .= "default_setting_value, cast(default_setting_enabled as text), default_setting_description ";
 	$sql .= "from v_default_settings ";
-	if (!empty($search) && !empty($search)) {
+	if (!empty($search)) {
 		$sql .= "where (";
 		$sql .= "	lower(default_setting_category) like :search ";
 		$sql .= "	or lower(default_setting_subcategory) like :search ";