diff --git a/libraries/config/config_functions.lib.php b/libraries/config/config_functions.lib.php
new file mode 100644
index 000000000..b0fa9fd32
--- /dev/null
+++ b/libraries/config/config_functions.lib.php
@@ -0,0 +1,229 @@
+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * Common config manipulation functions
+ *
+ * @package    phpMyAdmin
+ */
+
+/**
+ * Returns value of an element in $array given by $path.
+ * $path is a string describing position of an element in an associative array,
+ * eg. Servers/1/host refers to $array[Servers][1][host]
+ *
+ * @param  string   $path
+ * @param  array    $array
+ * @param  mixed    $default
+ * @return mixed    array element or $default
+ */
+function PMA_array_read($path, $array, $default = null)
+{
+    $keys = explode('/', $path);
+    $value =& $array;
+    foreach ($keys as $key) {
+        if (!isset($value[$key])) {
+            return $default;
+        }
+        $value =& $value[$key];
+    }
+    return $value;
+}
+
+/**
+ * Stores value in an array
+ *
+ * @param  string   $path
+ * @param  array    &$array
+ * @param  mixed    $value
+ */
+function PMA_array_write($path, &$array, $value)
+{
+    $keys = explode('/', $path);
+    $last_key = array_pop($keys);
+    $a =& $array;
+    foreach ($keys as $key) {
+        if (!isset($a[$key])) {
+            $a[$key] = array();
+        }
+        $a =& $a[$key];
+    }
+    $a[$last_key] = $value;
+}
+
+/**
+ * Removes value from an array
+ *
+ * @param  string   $path
+ * @param  array    &$array
+ * @param  mixed    $value
+ */
+function PMA_array_remove($path, &$array)
+{
+    $keys = explode('/', $path);
+    $keys_last = array_pop($keys);
+    $path = array();
+    $depth = 0;
+
+    $path[0] =& $array;
+    $found = true;
+    // go as deep as required or possible
+    foreach ($keys as $key) {
+        if (!isset($path[$depth][$key])) {
+            $found = false;
+            break;
+        }
+        $depth++;
+        $path[$depth] =& $path[$depth-1][$key];
+    }
+    // if element found, remove it
+    if ($found) {
+        unset($path[$depth][$keys_last]);
+        $depth--;
+    }
+
+    // remove empty nested arrays
+    for (; $depth >= 0; $depth--) {
+        if (!isset($path[$depth+1]) || count($path[$depth+1]) == 0) {
+            unset($path[$depth][$keys[$depth]]);
+        } else {
+            break;
+        }
+    }
+}
+
+/**
+ * Returns sanitized language string, taking into account our special codes
+ * for formatting. Takes variable number of arguments.
+ * Based on PMA_sanitize from sanitize.lib.php.
+ *
+ * @param  string  $lang_key key in $GLOBALS WITHOUT 'strSetup' prefix
+ * @param  mixed   $args     arguments for sprintf
+ * @return string
+ */
+function PMA_lang($lang_key)
+{
+    static $search, $replace;
+
+    // some quick cache'ing
+    if ($search === null) {
+        $replace_pairs = array(
+            '<'         => '&lt;',
+            '>'         => '&gt;',
+            '[em]'      => '<em>',
+            '[/em]'     => '</em>',
+            '[strong]'  => '<strong>',
+            '[/strong]' => '</strong>',
+            '[code]'    => '<code>',
+            '[/code]'   => '</code>',
+            '[kbd]'     => '<kbd>',
+            '[/kbd]'    => '</kbd>',
+            '[br]'      => '<br />',
+            '[sup]'     => '<sup>',
+            '[/sup]'    => '</sup>');
+        if (defined('PMA_SETUP')) {
+            $replace_pairs['[a@Documentation.html'] = '[a@../Documentation.html';
+        }
+        $search = array_keys($replace_pairs);
+        $replace = array_values($replace_pairs);
+    }
+    $message = isset($GLOBALS["strSetup$lang_key"]) ? $GLOBALS["strSetup$lang_key"] : $lang_key;
+    $message = str_replace($search, $replace, $message);
+    // replace [a@"$1"]$2[/a] with <a href="$1">$2</a>
+    $message = preg_replace('#\[a@("?)([^\]]+)\1\]([^\[]+)\[/a\]#e',
+        "PMA_lang_link_replace('$2', '$3')", $message);
+
+    if (func_num_args() == 1) {
+        return $message;
+    } else {
+        $args = func_get_args();
+        array_shift($args);
+        return vsprintf($message, $args);
+    }
+}
+
+/**
+ * Returns translated field name
+ *
+ * @param string $canonical_path
+ * @return string
+ */
+function PMA_lang_name($canonical_path)
+{
+    $lang_key = str_replace(
+    	array('Servers/1/', '/'),
+    	array('Servers/', '_'),
+    	$canonical_path) . '_name';
+    return isset($GLOBALS["strSetup$lang_key"])
+        ? $GLOBALS["strSetup$lang_key"]
+        : $lang_key;
+}
+
+/**
+ * Returns translated field description
+ *
+ * @param string $canonical_path
+ * @return string
+ */
+function PMA_lang_desc($canonical_path)
+{
+    $lang_key = str_replace(
+    	array('Servers/1/', '/'),
+    	array('Servers/', '_'),
+    	$canonical_path) . '_desc';
+    return isset($GLOBALS["strSetup$lang_key"])
+        ? PMA_lang($lang_key)
+        : '';
+}
+
+/**
+ * Wraps link in &lt;a&gt; tags and replaces argument separator in internal links
+ * to the one returned by PMA_get_arg_separator()
+ *
+ * @param string $link
+ * @param string $text
+ * @return string
+ */
+function PMA_lang_link_replace($link, $text)
+{
+    static $separator;
+
+    if (!isset($separator)) {
+        $separator = PMA_get_arg_separator('html');
+    }
+
+    if (!preg_match('#^http://#', $link)) {
+        $link = str_replace('&amp;', $separator, $link);
+    }
+
+    return '<a href="' . $link . '">' . $text . '</a>';
+}
+
+/**
+ * Reads user preferences field names
+ *
+ * @param array|null $forms
+ * @return array
+ */
+function PMA_read_userprefs_fieldnames(array $forms = null)
+{
+    static $names;
+
+    // return cached results
+    if ($names !== null) {
+        return $names;
+    }
+    if (is_null($forms)) {
+        $forms = array();
+        include 'libraries/config/user_preferences.forms.php';
+    }
+    $names = array();
+    foreach ($forms as $formset) {
+        foreach ($formset as $form) {
+            foreach ($form as $k => $v) {
+                $names[] = is_int($k) ? $v : $k;
+            }
+        }
+    }
+    return $names;
+}
+?>
\ No newline at end of file