diff --git a/auth.inc.php b/auth.inc.php
index 31aa90ff..1b5f8430 100644
--- a/auth.inc.php
+++ b/auth.inc.php
@@ -9,11 +9,7 @@ if (isset($_POST["server"])) {
 		$_SESSION["usernames"][$_POST["server"]] = $_POST["username"];
 		$_SESSION["passwords"][$_POST["server"]] = $_POST["password"];
 		if (count($_POST) == count($ignore)) {
-			if ((string) $_GET["server"] === $_POST["server"]) {
-				$location = remove_from_uri();
-			} else {
-				$location = preg_replace('~^[^?]*/([^?]*).*~', '\\1', $_SERVER["REQUEST_URI"]) . (strlen($_POST["server"]) ? '?server=' . urlencode($_POST["server"]) : '');
-			}
+			$location = ((string) $_GET["server"] === $_POST["server"] ? remove_from_uri() : preg_replace('~^[^?]*/([^?]*).*~', '\\1', $_SERVER["REQUEST_URI"]) . (strlen($_POST["server"]) ? '?server=' . urlencode($_POST["server"]) : ''));
 			if (!isset($_COOKIE[session_name()])) {
 				$location .= (strpos($location, "?") === false ? "?" : "&") . SID;
 			}
diff --git a/createv.inc.php b/createv.inc.php
index feef4781..3281b30f 100644
--- a/createv.inc.php
+++ b/createv.inc.php
@@ -15,13 +15,12 @@ if ($_POST && !$error) {
 
 page_header((strlen($_GET["createv"]) ? lang('Alter view') : lang('Create view')), $error, array("view" => $_GET["createv"]), $_GET["createv"]);
 
+$row = array();
 if ($_POST) {
 	$row = $_POST;
 } elseif (strlen($_GET["createv"])) {
 	$row = view($_GET["createv"]);
 	$row["name"] = $_GET["createv"];
-} else {
-	$row = array();
 }
 ?>
 
diff --git a/database.inc.php b/database.inc.php
index e4ab8860..3ac4eeb6 100644
--- a/database.inc.php
+++ b/database.inc.php
@@ -31,12 +31,12 @@ if ($_POST && !$error) {
 page_header(strlen($_GET["db"]) ? lang('Alter database') : lang('Create database'), $error, array(), $_GET["db"]);
 
 $collations = collations();
+$name = $_GET["db"];
+$collate = array();
 if ($_POST) {
 	$name = $_POST["name"];
 	$collate = $_POST["collation"];
 } else {
-	$name = $_GET["db"];
-	$collate = array();
 	if (!strlen($_GET["db"])) {
 		$result = $mysql->query("SHOW GRANTS");
 		while ($row = $result->fetch_row()) {
diff --git a/dump.inc.php b/dump.inc.php
index f6d953ec..5c19e984 100644
--- a/dump.inc.php
+++ b/dump.inc.php
@@ -1,6 +1,6 @@
 <?php
 function dump_table($table, $style) {
-	global $mysql, $max_packet;
+	global $mysql, $max_packet, $types;
 	$result = $mysql->query("SHOW CREATE TABLE " . idf_escape($table));
 	if ($result) {
 		echo $mysql->result($result, 1) . ";\n\n";
diff --git a/edit.inc.php b/edit.inc.php
index 56efbfc3..12bdb0db 100644
--- a/edit.inc.php
+++ b/edit.inc.php
@@ -7,12 +7,12 @@ foreach ($fields as $name => $field) {
 	}
 }
 if ($_POST && !$error) {
+	$set = array();
 	if (isset($_POST["delete"])) {
 		$set = true;
 		$query = "DELETE FROM " . idf_escape($_GET["edit"]) . " WHERE " . implode(" AND ", $where) . " LIMIT 1";
 		$message = lang('Item has been deleted.');
 	} else {
-		$set = array();
 		foreach ($fields as $name => $field) {
 			$val = process_input($name, $field);
 			if ($val !== false) {
@@ -43,6 +43,7 @@ if ($_POST && !$error) {
 }
 page_header((isset($_GET["default"]) ? lang('Default values') : ($_GET["where"] ? lang('Edit') : lang('Insert'))), $error, array((isset($_GET["default"]) ? "table" : "select") => $_GET["edit"]), $_GET["edit"]);
 
+unset($row);
 if ($_POST) {
 	$row = (array) $_POST["fields"];
 	foreach ((array) $_POST["null"] as $key => $val) {
@@ -61,8 +62,6 @@ if ($_POST) {
 	} else {
 		$row = array();
 	}
-} else {
-	unset($row);
 }
 ?>
 
diff --git a/functions.inc.php b/functions.inc.php
index e4d7cd99..022cd754 100644
--- a/functions.inc.php
+++ b/functions.inc.php
@@ -215,14 +215,14 @@ function select($result) {
 		echo "<p class='message'>" . lang('No rows.') . "</p>\n";
 	} else {
 		echo "<table border='1' cellspacing='0' cellpadding='2'>\n";
+		$links = array();
+		$indexes = array();
+		$columns = array();
+		$blobs = array();
+		$types = array();
 		for ($i=0; $row = $result->fetch_row(); $i++) {
 			if (!$i) {
 				echo "<thead><tr>";
-				$links = array();
-				$indexes = array();
-				$columns = array();
-				$blobs = array();
-				$types = array();
 				for ($j=0; $j < count($row); $j++) {
 					$field = $result->fetch_field();
 					if (strlen($field->orgtable)) {
diff --git a/index.php b/index.php
index 8f6b3ea9..57788663 100644
--- a/index.php
+++ b/index.php
@@ -42,6 +42,7 @@ if (isset($_GET["download"])) {
 	$enum_length = '\'(?:\'\'|[^\'\\\\]+|\\\\.)*\'|"(?:""|[^"\\\\]+|\\\\.)*"';
 	$inout = array("IN", "OUT", "INOUT");
 	
+	$error = "";
 	if (isset($_GET["table"])) {
 		include "./table.inc.php";
 	} elseif (isset($_GET["view"])) {
@@ -53,7 +54,6 @@ if (isset($_GET["download"])) {
 	} elseif (isset($_GET["privileges"])) {
 		include "./privileges.inc.php";
 	} else { // uses CSRF token
-		$error = "";
 		if ($_POST) {
 			if (!in_array($_POST["token"], (array) $TOKENS)) {
 				$error = lang('Invalid CSRF token. Send the form again.');
diff --git a/indexes.inc.php b/indexes.inc.php
index b1644d82..68b3c810 100644
--- a/indexes.inc.php
+++ b/indexes.inc.php
@@ -41,6 +41,7 @@ if ($_POST && !$error && !$_POST["add"]) {
 page_header(lang('Indexes'), $error, array("table" => $_GET["indexes"]), $_GET["indexes"]);
 
 $fields = array_keys(fields($_GET["indexes"]));
+$row = array("indexes" => $indexes);
 if ($_POST) {
 	$row = $_POST;
 	if ($_POST["add"]) {
@@ -55,7 +56,6 @@ if ($_POST) {
 		}
 	}
 } else {
-	$row = array("indexes" => $indexes);
 	foreach ($row["indexes"] as $key => $index) {
 		$row["indexes"][$key]["columns"][] = "";
 	}
diff --git a/lang.inc.php b/lang.inc.php
index c532d7f5..68f8f719 100644
--- a/lang.inc.php
+++ b/lang.inc.php
@@ -1,5 +1,5 @@
 <?php
-static $langs = array(
+$langs = array(
 	'en' => 'English',
 	'cs' => 'Čeština', // Jakub Vrána - http://php.vrana.cz
 	'sk' => 'Slovenčina', // Ivan Suchy - http://www.ivansuchy.com
@@ -39,6 +39,7 @@ if (isset($_GET["lang"])) {
 	$_SESSION["lang"] = $_GET["lang"];
 }
 
+$LANG = "en";
 if (isset($langs[$_COOKIE["lang"]])) {
 	setcookie("lang", $_GET["lang"], strtotime("+1 month"), preg_replace('~\\?.*~', '', $_SERVER["REQUEST_URI"]));
 	$LANG = $_COOKIE["lang"];
@@ -51,7 +52,6 @@ if (isset($langs[$_COOKIE["lang"]])) {
 		$accept_language[str_replace("_", "-", $match[1])] = (isset($match[3]) ? $match[3] : 1);
 	}
 	arsort($accept_language);
-	$LANG = "en";
 	foreach ($accept_language as $lang => $q) {
 		if (isset($langs[$lang])) {
 			$LANG = $lang;
diff --git a/procedure.inc.php b/procedure.inc.php
index 352fe6d8..36f42e04 100644
--- a/procedure.inc.php
+++ b/procedure.inc.php
@@ -32,6 +32,7 @@ if ($_POST && !$error && !$_POST["add"] && !$_POST["drop_col"] && !$_POST["up"]
 page_header((strlen($_GET["procedure"]) ? (isset($_GET["function"]) ? lang('Alter function') : lang('Alter procedure')) . ": " . htmlspecialchars($_GET["procedure"]) : (isset($_GET["function"]) ? lang('Create function') : lang('Create procedure'))), $error);
 
 $collations = get_vals("SHOW CHARACTER SET");
+$row = array("fields" => array());
 if ($_POST) {
 	$row = $_POST;
 	$row["fields"] = (array) $row["fields"];
@@ -39,8 +40,6 @@ if ($_POST) {
 } elseif (strlen($_GET["procedure"])) {
 	$row = routine($_GET["procedure"], $routine);
 	$row["name"] = $_GET["procedure"];
-} else {
-	$row = array("fields" => array());
 }
 ?>
 
diff --git a/schema.inc.php b/schema.inc.php
index a53c9406..cf8e2e07 100644
--- a/schema.inc.php
+++ b/schema.inc.php
@@ -30,10 +30,10 @@ while ($row = $result->fetch_assoc()) {
 	if ($row["Engine"] == "InnoDB") {
 		foreach (foreign_keys($row["Name"]) as $val) {
 			if (!$val["db"]) {
+				$left = $base_left;
 				if ($table_pos[$row["Name"]][1] || $table_pos[$row["Name"]][1]) {
 					$left = min($table_pos[$row["Name"]][1], $table_pos[$val["table"]][1]) - 1;
 				} else {
-					$left = $base_left;
 					$base_left -= .1;
 				}
 				while ($lefts[(string) $left]) {
diff --git a/trigger.inc.php b/trigger.inc.php
index 936b7327..d4034087 100644
--- a/trigger.inc.php
+++ b/trigger.inc.php
@@ -21,6 +21,7 @@ if ($_POST && !$error) {
 }
 page_header((strlen($_GET["name"]) ? lang('Alter trigger') . ": " . htmlspecialchars($_GET["name"]) : lang('Create trigger')), $error, array("table" => $_GET["trigger"]));
 
+$row = array("Trigger" => "$_GET[trigger]_bi");
 if ($_POST) {
 	$row = $_POST;
 } elseif (strlen($_GET["name"])) {
@@ -31,8 +32,6 @@ if ($_POST) {
 		}
 	}
 	$result->free();
-} else {
-	$row = array("Trigger" => "$_GET[trigger]_bi");
 }
 ?>
 
diff --git a/user.inc.php b/user.inc.php
index 3fc58485..e92b8ea0 100644
--- a/user.inc.php
+++ b/user.inc.php
@@ -27,8 +27,8 @@ function all_privileges(&$grants, $privileges) {
 	}
 }
 
+$new_grants = array();
 if ($_POST) {
-	$new_grants = array();
 	foreach ($_POST["objects"] as $key => $val) {
 		$new_grants[$val] = ((array) $new_grants[$val]) + ((array) $_POST["grants"][$key]);
 	}