php notices Undefined error with php 5.4+
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/4261133/php-notice-undefined-variable-and-notice-undefined-index">PHP: &ldquo;Notice: Undefined variable&rdquo;  and &ldquo;Notice: Undefined index&rdquo;</a>  </p>
</blockquote>



<p>I upgrade/install <code>PHP 5.4.4</code> (xampp 1.8.0) in localhost. now i see many <code>notice error</code> in my page. what's problem? how to fix this?</p>

<p>Secion Of Error : </p>

<pre><code>Notice: Undefined index: language in C:\xampp\htdocs\tube\include\config.php on line 93

Notice: Undefined variable: max_avatar_width in C:\xampp\htdocs\tube\include\lang\english.php on line 495

Notice: Undefined variable: max_avatar_height in C:\xampp\htdocs\tube\include\lang\english.php on line 496

Notice: Undefined index: USERID in C:\xampp\htdocs\tube\index.php on line 26
</code></pre>

<p>Config PHP page :</p>

<pre><code>if ($_REQUEST['language'] != '') // &lt;---- Line 93 
{
    if ($_REQUEST['language'] == 'english')
    {

        $_SESSION['language'] = 'english';
    }
    elseif ($_REQUEST['language'] == 'spanish')
    {

        $_SESSION['language'] = 'spanish';
    }
}

if ($_SESSION['language'] == "")
{

    $_SESSION['language'] = "english";
}

if ($_SESSION['language'] == "english")
{
include("lang/english.php");
}
elseif ($_SESSION['language'] == "spanish")
{
include("lang/spanish.php");
}
else
{
include("lang/english.php");
}
</code></pre>

<p>English Lang Page (line 495 and 496) : </p>

<pre><code>$lang['491'] =  "The image width is too big. Max width is $max_avatar_width pixels."; 
$lang['492'] =  "The image height is too big. Max height is $max_avatar_height pixels.";
</code></pre>

<p>Index PHP Page:</p>

<pre><code>if($_SESSION['USERID'] == "") // &lt;-- Line 26
{
    $showfamfilter = "AND mature='0'";
}
elseif($_SESSION['FAMILYFILTER'] == "0")
{
    $showfamfilter = "";
}
else
{
    $showfamfilter = "AND mature='0'";
}
</code></pre>
