Description:
------------
htmlspecialchars_decode() is missing.

Reproduce code:
---------------
echo htmlspecialchars_decode("asdf<>");

Expected result:
----------------
Should output:

asdf<>

Actual result:
--------------
Fatal error: Call to undefined function htmlspecialchars_decode()

I double checked my php version and I am definitely running php 5.0.4 and according to the docs this function should be available in PHP 5.

http://us2.php.net/manual/en/function.htmlspecialchars-decode.php

I did the usual configure, make, make install.

./configure --prefix=/usr/lib/php --with-apxs2=/usr/sbin/apxs2 --with-openssl --with-zlib --enable-dio --with-bz2 --enable-calendar --enable-bcmath --with-curl=/usr/include/curl --enable-exif --enable-filepro --enable-ftp --with-ttf --enable-mbstring --enable-zend-multibyte --without-mysql --with-mysqli=/usr/lib/mysql/bin/mysql_config --with-mysql-sock=/var/run/mysqld/mysql.sock --enable-sockets --enable-sqllite-utf8 --enable-wddx --with-gettext=/usr/lib/gettext --with-imagick=/usr --with-mcrypt --with-mhash --with-gd --with-jpeg-dir --with-png-dir --with-freetype-dir --with-zlib-dir --with-libxml-dir

make 

make install