Use Authorize.net with php 4

[StuckWithphp4]

I am stuck with php 4 for at least several months (until my ISP will move my account and I can get a free month to test all my code) and need to connect to authorize.net NOW.

Do you have old sample code that I can use? I don't know much about this server stuff and how to get it changed --

Here is what my server has:

Curl: libcurl/7.10.4 OpenSSL/0.9.6b zlib/1.1.4
PHP: PHP Version 4.4.9
Configure command:
'./configure' '--localstatedir=/var/hsphere/php' '--prefix=/hsphere/shared/php4' '--with-bz2=shared,/usr' '--enable-cgi' '--enable-fastcgi' '--enable-ctype' '--enable-bcmath' '--enable-calendar' '--enable-exif' '--enable-dbase' '--enable-pcntl' '--enable-shmop' '--enable-soap' '--enable-sysvmsg' '--enable-sysvsem' '--enable-sysvshm' '--enable-dba' '--enable-ftp' '--enable-zip' '--enable-shared' '--enable-xslt' '--with-gettext=shared,/usr' '--enable-mbstring=all' '--with-gd=shared' '--with-dom=shared,/usr' '--with-dom-xslt=shared,

Other Ini files:
/hsphere/local/config/httpd/php4/php.d/bz2.ini, /hsphere/local/config/httpd/php4/php.d/curl.ini, /hsphere/local/config/httpd/php4/php.d/domxml.ini, /hsphere/local/config/httpd/php4/php.d/gd.ini, /hsphere/local/config/httpd/php4/php.d/gettext.ini, /hsphere/local/config/httpd/php4/php.d/gmp.ini, /hsphere/local/config/httpd/php4/php.d/iconv.ini, /hsphere/local/config/httpd/php4/php.d/imap.ini, /hsphere/local/config/httpd/php4/php.d/mcrypt.ini, /hsphere/local/config/httpd/php4/php.d/mhash.ini, /hsphere/local/config/httpd/php4/php.d/mysql.ini, /hsphere/local/config/httpd/php4/php.d/odbc.ini, /hsphere/local/config/httpd/php4/php.d/pdflib.ini, /hsphere/local/config/httpd/php4/php.d/pgsql.ini, /hsphere/local/config/httpd/php4/php.d/zip.ini

Any help would be greatly appreciated!