Description:
------------
PHP can be opened with <script language="php">

But the language attribute is deprecated: 
http://www.w3.org/TR/html4/interact/scripts.html

It should use "type" instead.

Also the tag does not support charset.

Test script:
---------------
<script language="php">
  echo "Hello";
</script>

<script type="application/php">
  echo "Hello"
</script>

Expected result:
----------------
<script language="php">
  echo "Hello";
</script>

Hello

Actual result:
--------------
Hello

<script type="application/php">
  echo "Hello"
</script>