Frytimo pr patches for php8.1 (#6630)

* Passing null to parameter #2 ($string) of type string is deprecated

* Passing null to parameter #1 ($string) of type string is deprecated

* php 8.1 fixes

* php 8.1 fixes - replace strlen($var) > 0 with !empty($var)

* php 8.1 fixes - replace ${var} with {$var}

* php 8.1 fixes - replace ${var} with {$var}

* php 8.1 fixes - replace ${var} with {$var}

* php 8.1 fixes - replace ${var} with {$var}

* php 8.1 fixes - strlower with null

* php 8.1 fixes - strreplace with null

* php 8.1 fixes - passing null to base64_decode

* php 8.1 fixes - check for false and check for null on $this->dir

* php 8.1 fixes - remove assignment of $db variable to modules object

* php 8.1 fixes - avoid sending null to substr

* php 8.1 fixes - change ${var} to {$var}

* php 8.1 fixes - check for null before preg_replace

* php 8.1 fixes - remove setting db variable on domains object

* php 8.1 fixes - set empty string if $row['domain_setting_subcategory'] is null

* php 8.1 fixes - set empty string if $_REQUEST['show'] is not available

* php 8.1 fixes

* php 8.1 fixes - correct $_POST checking syntax

* php 8.1 fixes - correct $_POST variables

* php 8.1 fixes

* Use brackets consistently

* Update user_setting_edit.php

* Change to not empty

* Update device.php

* Update text.php

---------

Co-authored-by: Tim Fry <tim@voipstratus.com>
Co-authored-by: FusionPBX <markjcrane@gmail.com>

resources/pdo_vm.php

@@ -60,7 +60,7 @@
 //database connection
 	try {
 		unset($db);
-		if (strlen($odbc_dsn) == 0) {
+		if (empty($odbc_dsn)) {
 			$db = new PDO('sqlite:'.$_SESSION['switch']['db']['dir'].'/voicemail_default.db'); //sqlite 3
 		}
 		else {