Fatal error: Call to unsupported or undefined function xml_parser_create() in c:/www/htdocs//xml/index.php3 on line 83

The files are index.php3, xmltest.xml and xmltest2.xml from the PHP Manual.

-----------php3.ini-------------

[PHP_3]

engine = On
short_open_tag = On
asp_tags = Off
precision = 14
y2k_compliance = On
safe_mode = Off
safe_mode_exec_dir = 
highlight.string = #DD0000
highlight.comment = #FF8000
highlight.keyword = #007700
highlight.bg = #FFFFFF
highlight.default = #0000BB
highlight.html = #000000
expose_php = Off
max_execution_time = 30
memory_limit = 8388608

error_reporting = 8
display_errors = On
log_errors = On
track_errors = On
error_log = syslog
warn_plus_overloading = Off

magic_quotes_gpc = On
magic_quotes_runtime = Off
magic_quotes_sybase = Off
track_vars = On
auto_prepend_file	=
auto_append_file	=

include_path = 
doc_root =
user_dir =
upload_max_filesize = 2097152
extension_dir = c:/www/php3/

extension=php3_xml.dll
extension=php3_mysql.dll
extension=php3_calendar.dll
extension=php3_dbase.dll
extension=php3_gd.dll
extension=php3_zlib.dll
extension=php3_crypt.dll
extension=php3_odbc.dll
extension=php3_ftp.dll
extension=php3_oci80.dll
extension=php3_pdflib.dll
extension=php3_snmp.dll
;extension=php3_dbm.dll
;extension=php3_mssql.dll
;extension=php3_filepro.dll
;extension=php3_imap4r1.dll
;extension=php3_ldap.dll
;extension=php3_msql2.dll

[Syslog]
define_syslog_variables	= Off

[mail function]
SMTP = localhost
sendmail_from = php@esx-herbert.osite.com.br
sendmail_path =

[Debugger]
debugger.host = localhost
debugger.port = 7869
debugger.enabled = true

[Logging]

[SQL]
sql.safe_mode = Off

[ODBC]
uodbc.allow_persistent = On
uodbc.max_persistent = -1
uodbc.max_links = -1
uodbc.defaultlrl = 4096
uodbc.defaultbinmode = 1

[MySQL]
mysql.allow_persistent = On
mysql.max_persistent = -1
mysql.max_links = -1
mysql.default_port =
mysql.default_host =
mysql.default_user =
mysql.default_password =

[PostgresSQL]
pgsql.allow_persistent = On
pgsql.max_persistent = -1
pgsql.max_links = -1

[Sybase]
sybase.allow_persistent = On
sybase.max_persistent = -1
sybase.max_links = -1
sybase.min_error_severity	=	10
sybase.min_message_severity = 10
sybase.compatability_mode = Off

[Sybase-CT]
sybct.allow_persistent = On
sybct.max_persistent = -1
sybct.max_links = -1
sybct.min_server_severity = 10
sybct.min_client_severity = 10

[bcmath]
bcmath.scale = 0

[browscap]
;browscap	=	extra/browscap.ini

[image]
;ps.default_encoding = "/etc/t1lib/enc/IsoLatin1.enc"