diff --git a/index.php b/index.php
index d06f664..d8e82ec 100644
--- a/index.php
+++ b/index.php
@@ -33,7 +33,7 @@
 	require 'lib/function.php';
 	require 'lib/layout.php';
 
-	if ($x_hacks['smallbrowse'] == 1 and false) {
+	if (false && $x_hacks['smallbrowse'] == 1) {
 		require 'mobile/index.php'; // alternate markup for mobile clients.
 	} else {
 		if (filter_string($_GET['action']) == 'markforumread' and $log) {
@@ -208,7 +208,7 @@
 	while ($in = $sql->fetch($data, MYSQL_ASSOC)) {
 		$recent_threads .= "<tr>
 			$tccell2><a href='forum.php?id=". $in['fid'] ."'>". $in['ftitle'] ."</a></td>
-			$tccell1l>$newpost<a href='thread.php?id=". $in['id'] ."&end=1'>". $in['title'] ."</a></td>
+			$tccell1l><a href='thread.php?id=". $in['id'] ."&end=1'>". $in['title'] ."</a></td>
 			$tccell1><a href='profile.php?id=". $in['user'] ."'><font ". getnamecolor($in['usex'], $in['upowerlevel']) .">". $in['uname'] ."</font></a></td>
 			$tccell2>". timeunits(ctime() - $in['date']) ."</td>
 			</tr>\n";
diff --git a/lib/function.php b/lib/function.php
index c2f11aa..849f18f 100644
--- a/lib/function.php
+++ b/lib/function.php
@@ -52,14 +52,14 @@
 
 		// Bad Design Decisions 2001.
 		// :(
-		if (!get_magic_quotes_gpc()) {
+		if (!function_exists("get_magic_quotes_gpc")) {
 			$_GET = addslashes_array($_GET);
 			$_POST = addslashes_array($_POST);
 			$_COOKIE = addslashes_array($_COOKIE);
 		}
 		if(!ini_get('register_globals')){
 			$supers=array('_ENV', '_SERVER', '_GET', '_POST', '_COOKIE',);
-			foreach($supers as $__s) if (is_array($$__s)) extract($$__s, EXTR_SKIP);
+			foreach($supers as $__s) if (isset($$__s) && is_array($$__s)) extract($$__s, EXTR_SKIP);
 			unset($supers);
 		}
 	}
@@ -188,7 +188,7 @@
 		$log					= 0;
 	}
 
-	if ($x_hacks['superadmin']) $loguser['powerlevel'] = 4;
+	if ($x_hacks['superadmin'] ?? false) $loguser['powerlevel'] = 4;
 
 	$power     = $loguser['powerlevel'];
 	$banned    = ($power<0);
@@ -382,7 +382,7 @@ function generatenumbergfx($num,$minlen=0,$double=false){
 	}
 
 	for($i=0;$i<strlen($num);$i++) {
-		$code	= $num{$i};
+		$code	= $num[$i];
 		switch ($code) {
 			case "/":
 				$code	= "slash";
diff --git a/lib/layout.php b/lib/layout.php
index f204a84..6a66f49 100644
--- a/lib/layout.php
+++ b/lib/layout.php
@@ -100,7 +100,7 @@
 				background: #$bgcolor$bgimage;
 			}
 
-			". ($loguser['fontsize'] ? "
+			". (($loguser['fontsize'] ?? false) ? "
 			body { font-size: $loguser[fontsize]%; }
 			" : "") ."
 
@@ -444,7 +444,7 @@
 	  <form action='login.php' method='post' name='logout'><input type='hidden' name='action' value='logout'></form>
 	  <td class='tbl tdbg1 center' colspan=3>$boardtitle";
   $header2="
-	  ". (!$x_hacks['smallbrowse'] ? "
+	  ". (!($x_hacks['smallbrowse'] ?? false) ? "
 	  </td><tr>
 		  <td width='120px' class='tbl tdbg2 center fonts'><nobr>Views: $dispviews<br><img src=images/_.gif width=120 height=1></td>
 		  <td width='100%' class='tbl tdbg2 center fonts'>$headlinks2</td>
diff --git a/lib/mysql_compat.php b/lib/mysql_compat.php
index 5461e98..7b0023d 100644
--- a/lib/mysql_compat.php
+++ b/lib/mysql_compat.php
@@ -55,7 +55,7 @@ namespace {
 
             $hash = sha1($hostname . $username . $flags);
             /* persistent connections start with p: */
-            if ($hostname{1} !== ':' && isset(\Dshafik\MySQL::$connections[$hash])) {
+            if ($hostname[1] !== ':' && isset(\Dshafik\MySQL::$connections[$hash])) {
                 \Dshafik\MySQL::$last_connection = \Dshafik\MySQL::$connections[$hash]['conn'];
                 \Dshafik\MySQL::$connections[$hash]['refcount'] += 1;
                 return \Dshafik\MySQL::$connections[$hash]['conn'];
@@ -729,7 +729,7 @@ namespace Dshafik {
         {
             $escapedString = '';
             for ($i = 0, $max = strlen($unescapedString); $i < $max; $i++) {
-                $escapedString .= self::escapeChar($unescapedString{$i});
+                $escapedString .= self::escapeChar($unescapedString[$i]);
             }
 
             return $escapedString;