I try to use the image fonction in my program. I have configured my php.ini to use dynamic extensions. I copy all the gd file in my working directory. 
But when i execute the program, t get error:
Unable to load dynamic library 'c:\php\extensions\php_gd.dll
Can you help me?
Thanks.

This is my program
<?php
#include "gd.c"
//dl("c:/php/extensions/php_gd.dll"); 
$pic=ImageCreate(600,600); 
$col1=ImageColorAllocate($pic,200,200,200); 
$col2=ImageColorAllocate($pic,0,0,255); 
ImageFilledRectangle($pic,1,1,100,100,$col2); 
ImagePNG($pic,"pic.png"); 
ImageDestroy($pic); 
?> 
<img src="pic.png" border=0> 

This my php.ini file

[PHP]

;;;;;;;;;;;;;;;;;;;
; About this file ;
;;;;;;;;;;;;;;;;;;;
; This file controls many aspects of PHP's behavior.  In order for PHP to
; read it, it must be named 'php.ini'.  PHP looks for it in the current
; working directory, in the path designated by the environment variable
; PHPRC, and in the path that was defined in compile time (in that order).
; Under Windows, the compile-time path is the Windows directory.  The
; path in which the php.ini file is looked for can be overriden using
; the -c argument in command line mode.
;
; The syntax of the file is extremely simple.  Whitespace and Lines
; beginning with a semicolon are silently ignored (as you probably guessed).
; Section headers (e.g. [Foo]) are also silently ignored, even though
; they might mean something in the future.
;
; Directives are specified using the following syntax:
; directive=value
; Directive names are *case sensitive* - foo=bar is different from FOO=bar.
;
; The value can be a string, a number, a PHP constant (e.g. E_ALL or M_PI), one
; of the INI constants (On, Off, True, False, Yes, No and None) or an expression
; (e.g. E_ALL & ~E_NOTICE), or a quoted string ("foo").
;
; Expressions in the INI file are limited to bitwise operators and parentheses:
; |				bitwise OR
; &				bitwise AND
; ~				bitwise NOT
; !				boolean NOT
;
; Boolean flags can be turned on using the values 1, On, True or Yes.
; They can be turned off using the values 0, Off, False or No.
;
; An empty string can be denoted by simply not writing anything after the equal
; sign, or by using the None keyword:
;
;   foo=; sets foo to an empty string
;	foo=none		; sets foo to an empty string
;	foo="none"	; sets foo to the string 'none'
;
; If you use constants in your value, and these constants belong to a dynamically
; loaded extension (either a PHP extension or a Zend extension), you may only
; use these constants *after* the line that loads the extension.
;
; All the values in the php.ini-dist file correspond to the builtin
; defaults (that is, if no php.ini is used, or if you delete these lines,
; the builtin defaults will be identical).


;;;;;;;;;;;;;;;;;;;;
; Language Options ;
;;;;;;;;;;;;;;;;;;;;

engine=On	; Enable the PHP scripting language engine under Apache
short_open_tag=On	; allow the <? tag.  otherwise, only <?php and <script> tags are recognized.
asp_tags=Off ; allow ASP-style <% %> tags
precision=14	; number of significant digits displayed in floating point numbers
y2k_compliance=Off	; whether to be year 2000 compliant (will cause problems with non y2k compliant browsers)
output_buffering=Off	; Output buffering allows you to send header lines (including cookies)
; even after you send body content, in the price of slowing PHP's
; output layer a bit.
; You can enable output buffering by in runtime by calling the output
; buffering functions, or enable output buffering for all files
; by setting this directive to On.
output_handler=; You can redirect all of the output of your scripts to a function,
; that can be responsible to process or log it.  For example,
; if you set the output_handler to "ob_gzhandler", than output
; will be transparently compressed for browsers that support gzip or
; deflate encoding.  Setting an output handler automatically turns on
; output buffering.
implicit_flush=Off	; Implicit flush tells PHP to tell the output layer to flush itself
; automatically after every output block.  This is equivalent to
; calling the PHP function flush() after each and every call to print()
; or echo() and each and every HTML block.
; Turning this option on has serious performance implications, and
; is generally recommended for debugging purposes only.
allow_call_time_pass_reference=On	; whether to enable the ability to force arguments to be 
; passed by reference at function-call time.  This method
; is deprecated, and is likely to be unsupported in future
; versions of PHP/Zend.  The encouraged method of specifying
; which arguments should be passed by reference is in the
; function declaration.  You're encouraged to try and
; turn this option Off, and make sure your scripts work
; properly with it, to ensure they will work with future
; versions of the language (you will receive a warning
; each time you use this feature, and the argument will
; be passed by value instead of by reference).

; Safe Mode
safe_mode=Off
safe_mode_exec_dir=
safe_mode_allowed_env_vars=PHP_					; Setting certain environment variables
; may be a potential security breach.
; This directive contains a comma-delimited
; list of prefixes.  In Safe Mode, the
; user may only alter environment
; variables whose names begin with the
; prefixes supplied here.
; By default, users will only be able
; to set environment variables that begin
; with PHP_ (e.g. PHP_FOO=BAR).
; Note:  If this directive is empty, PHP
; will let the user modify ANY environment
; variable!
safe_mode_protected_env_vars=LD_LIBRARY_PATH		; This directive contains a comma-
; delimited list of environment variables,
; that the end user won't be able to
; change using putenv().
; These variables will be protected
; even if safe_mode_allowed_env_vars is
; set to allow to change them.


disable_functions=; This directive allows you to disable certain
; functions for security reasons.  It receives
; a comma separated list of function names.
; This directive is *NOT* affected by whether
; Safe Mode is turned on or off.


; Colors for Syntax Highlighting mode.  Anything that's acceptable in <font color=???> would work.
highlight.string=#DD0000
highlight.comment=#FF8000
highlight.keyword=#007700
highlight.bg=#FFFFFF
highlight.default=#0000BB
highlight.html=#000000

; Misc
expose_php=On		; Decides whether PHP may expose the fact that it is installed on the
; server (e.g., by adding its signature to the Web server header).
; It is no security threat in any way, but it makes it possible
; to determine whether you use PHP on your server or not.



;;;;;;;;;;;;;;;;;;;
; Resource Limits ;
;;;;;;;;;;;;;;;;;;;

max_execution_time=30     ; Maximum execution time of each script, in seconds
memory_limit=8M			; Maximum amount of memory a script may consume (8MB)


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Error handling and logging ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; error_reporting is a bit-field.  Or each number up to get desired error reporting level
; E_ALL				- All errors and warnings
; E_ERROR			- fatal run-time errors
; E_WARNING			- run-time warnings (non fatal errors)
; E_PARSE			- compile-time parse errors
; E_NOTICE			- run-time notices (these are warnings which often result from a bug in
;					  your code, but it's possible that it was intentional (e.g., using an
;					  uninitialized variable and relying on the fact it's automatically
;					  initialized to an empty string)
; E_CORE_ERROR		- fatal errors that occur during PHP's initial startup
; E_CORE_WARNING	- warnings (non fatal errors) that occur during PHP's initial startup
; E_COMPILE_ERROR	- fatal compile-time errors
; E_COMPILE_WARNING	- compile-time warnings (non fatal errors)
; E_USER_ERROR		- user-generated error message
; E_USER_WARNING	- user-generated warning message
; E_USER_NOTICE		- user-generated notice message
; Examples:
; error_reporting=E_ALL & ~E_NOTICE						; show all errors, except for notices
; error_reporting=E_COMPILE_ERROR|E_ERROR|E_CORE_ERROR	; show only errors
error_reporting= E_ALL; display all errors, warnings and notices
display_errors=On	; Print out errors (as a part of the output)
; For production web sites, you're strongly encouraged
; to turn this feature off, and use error logging instead (see below).
; Keeping display_errors enabled on a production web site may reveal
; security information to end users, such as file paths on your Web server,
; your database schema or other information.
display_startup_errors=Off		; Even when display_errors is on, errors that occur during
; PHP's startup sequence are not displayed.  It's strongly
; recommended to keep display_startup_errors off, except for
; when debugging.
log_errors=Off	; Log errors into a log file (server-specific log, stderr, or error_log (below))
; As stated above, you're strongly advised to use error logging in place of
; error displaying on production web sites.
track_errors=Off	; Store the last error/warning message in $php_errormsg (boolean)
;error_prepend_string="<font color=ff0000>"   ; string to output before an error message
;error_append_string="</font>"                ; string to output after an error message
;error_log=filename	; log errors to specified file
;error_log=syslog		; log errors to syslog (Event Log on NT, not valid in Windows 95)
warn_plus_overloading=Off		; warn if the + operator is used with strings


;;;;;;;;;;;;;;;;;
; Data Handling ;
;;;;;;;;;;;;;;;;;
; Note - track_vars is ALWAYS enabled as of PHP 4.0.3
variables_order="EGPCS"	; This directive describes the order in which PHP registers
; GET, POST, Cookie, Environment and Built-in variables (G, P,
; C, E & S respectively, often referred to as EGPCS or GPC).
; Registration is done from left to right, newer values override
; older values.
register_globals=On		; Whether or not to register the EGPCS variables as global
; variables.  You may want to turn this off if you don't want
; to clutter your scripts' global scope with user data.  This makes
; most sense when coupled with track_vars - in which case you can
; access all of the GPC variables through the $HTTP_*_VARS[],
; variables.
; You should do your best to write your scripts so that they do
; not require register_globals to be on;  Using form variables
; as globals can easily lead to possible security problems, if
; the code is not very well thought of.
register_argc_argv=On		; This directive tells PHP whether to declare the argv&argc
; variables (that would contain the GET information).  If you
; don't use these variables, you should turn it off for
; increased performance
post_max_size=8M		; Maximum size of POST data that PHP will accept.
gpc_order="GPC"	; This directive is deprecated.  Use variables_order instead.

; Magic quotes
magic_quotes_gpc=On		; magic quotes for incoming GET/POST/Cookie data
magic_quotes_runtime=Off		; magic quotes for runtime-generated data, e.g. data from SQL, from exec(), etc.
magic_quotes_sybase=Off		; Use Sybase-style magic quotes (escape ' with '' instead of \')

; automatically add files before or after any PHP document
auto_prepend_file=
auto_append_file=

; As of 4.0b4, PHP always outputs a character encoding by default in
; the Content-type: header.  To disable sending of the charset, simply
; set it to be empty.
; PHP's built-in default is text/html
default_mimetype="text/html"
;default_charset="iso-8859-1"

;;;;;;;;;;;;;;;;;;;;;;;;;
; Paths and Directories ;
;;;;;;;;;;;;;;;;;;;;;;;;;
include_path=; UNIX: "/path1:/path2"  Windows: "\path1;\path2"
doc_root=; the root of the php pages, used only if nonempty
user_dir=; the directory under which php opens the script using /~username, used only if nonempty
extension_dir=c:\php\extensions\			; directory in which the loadable extensions (modules) reside
enable_dl=On				; Whether or not to enable the dl() function.
; The dl() function does NOT properly work in multithreaded
; servers, such as IIS or Zeus, and is automatically disabled
; on them.


;;;;;;;;;;;;;;;;
; File Uploads ;
;;;;;;;;;;;;;;;;
file_uploads=On				; Whether to allow HTTP file uploads
;upload_tmp_dir=; temporary directory for HTTP uploaded files (will use system default if not specified)
upload_max_filesize=2M		    ; Maximum allowed size for uploaded files


;;;;;;;;;;;;;;;;;;
; Fopen wrappers ;
;;;;;;;;;;;;;;;;;;
allow_url_fopen=On                ; Wheter to allow trating URLs like http:... or ftp:... like files


;;;;;;;;;;;;;;;;;;;;;;
; Dynamic Extensions ;
;;;;;;;;;;;;;;;;;;;;;;
; if you wish to have an extension loaded automaticly, use the
; following syntax:  extension=modulename.extension
; for example, on windows,
; extension=msql.dll
; or under UNIX,
; extension=msql.so
; Note that it should be the name of the module only, no directory information 
; needs to go here.  Specify the location of the extension with the extension_dir directive above.


;Windows Extensions
;Note that MySQL and ODBC support is now built in, so no dll is needed for it.
;
;extension=php_bz2.dll
;extension=php_ctype.dll
;extension=php_cpdf.dll
;extension=php_curl.dll
;extension=php_cybercash.dll
;extension=php_db.dll
;extension=php_dba.dll
;extension=php_dbase.dll
;extension=php_domxml.dll
;extension=php_dotnet.dll
;extension=php_exif.dll
;extension=php_fdf.dll
;extension=php_filepro.dll
extension=php_gd.dll
;extension=php_gettext.dll
;extension=php_ifx.dll
;extension=php_iisfunc.dll
;extension=php_imap.dll
;extension=php_interbase.dll
;extension=php_java.dll
;extension=php_ldap.dll
;extension=php_mhash.dll
;extension=php_mssql65.dll
;extension=php_mssql70.dll
;extension=php_oci8.dll
;extension=php_openssl.dll
;extension=php_oracle.dll
;extension=php_pdf.dll
;extension=php_pgsql.dll
;extension=php_printer.dll
;extension=php_sablot.dll
;extension=php_snmp.dll
;extension=php_sybase_ct.dll
;extension=php_yaz.dll
;extension=php_zlib.dll


;;;;;;;;;;;;;;;;;;;
; Module Settings ;
;;;;;;;;;;;;;;;;;;;

[Syslog]
define_syslog_variables=Off	; Whether or not to define the various syslog variables,
; e.g. $LOG_PID, $LOG_CRON, etc.  Turning it off is a
; good idea performance-wise.  In runtime, you can define
; these variables by calling define_syslog_variables()


[mail function]
SMTP= localhost ; for Win32 only
sendmail_from= me@localhost.com ; for Win32 only
;sendmail_path=;for unix only, may supply arguments as well (default is 'sendmail -t -i')

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

[Logging]
; These configuration directives are used by the example logging mechanism.
; See examples/README.logging for more explanation.
;logging.method=db
;logging.directory=/path/to/log/directory

[Java]
;java.class.path=.\php_java.jar
;java.home=c:\jdk
;java.library=c:\jdk\jre\bin\hotspot\jvm.dll 
;java.library.path=.\


[SQL]
sql.safe_mode=Off

[ODBC]
;odbc.default_db=Not yet implemented
;odbc.default_user=Not yet implemented
;odbc.default_pw=Not yet implemented
odbc.allow_persistent=On	; allow or prevent persistent links
odbc.check_persistent=On	; check that a connection is still validbefore reuse
odbc.max_persistent=-1	; maximum number of persistent links. -1 means no limit
odbc.max_links=-1	; maximum number of links (persistent+non persistent). -1 means no limit
odbc.defaultlrl=4096	; Handling of LONG fields. Returns number of bytes to variables, 0 means passthru
odbc.defaultbinmode=1	; Handling of binary data. 0 means passthru, 1 return as is, 2 convert to char
; See the documentation on odbc_binmode and odbc_longreadlen for an explanation of uodbc.defaultlrl
; and uodbc.defaultbinmode

[MySQL]
mysql.allow_persistent=On	; allow or prevent persistent link
mysql.max_persistent=-1	; maximum number of persistent links. -1 means no limit
mysql.max_links=-1	; maximum number of links (persistent+non persistent).  -1 means no limit
mysql.default_port=; default port number for mysql_connect().  If unset,
; mysql_connect() will use the $MYSQL_TCP_PORT, or the mysql-tcp
; entry in /etc/services, or the compile-time defined MYSQL_PORT
; (in that order).  Win32 will only look at MYSQL_PORT.
mysql.default_socket=; default socket name for local MySQL connects.  If empty, uses the built-in
; MySQL defaults
mysql.default_host=; default host for mysql_connect() (doesn't apply in safe mode)
mysql.default_user=; default user for mysql_connect() (doesn't apply in safe mode)
mysql.default_password=; default password for mysql_connect() (doesn't apply in safe mode)
; Note that this is generally a *bad* idea to store passwords
; in this file.  *Any* user with PHP access can run
; 'echo cfg_get_var("mysql.default_password")' and reveal that
; password!  And of course, any users with read access to this
; file will be able to reveal the password as well.

[mSQL]
msql.allow_persistent=On	; allow or prevent persistent link
msql.max_persistent=-1	; maximum number of persistent links. -1 means no limit
msql.max_links=-1	; maximum number of links (persistent+non persistent).  -1 means no limit

[PostgresSQL]
pgsql.allow_persistent=On	; allow or prevent persistent link
pgsql.max_persistent=-1	; maximum number of persistent links. -1 means no limit
pgsql.max_links=-1	; maximum number of links (persistent+non persistent).  -1 means no limit

[Sybase]
sybase.allow_persistent=On	; allow or prevent persistent link
sybase.max_persistent=-1	; maximum number of persistent links. -1 means no limit
sybase.max_links=-1	; maximum number of links (persistent+non persistent).  -1 means no limit
;sybase.interface_file="/usr/sybase/interfaces"
sybase.min_error_severity=10	; minimum error severity to display
sybase.min_message_severity=10	; minimum message severity to display
sybase.compatability_mode=Off	; compatability mode with old versions of PHP 3.0.
; If on, this will cause PHP to automatically assign types to results
; according to their Sybase type, instead of treating them all as
; strings.  This compatability mode will probably not stay around
; forever, so try applying whatever necessary changes to your code,
; and turn it off.

[Sybase-CT]
sybct.allow_persistent=On		; allow or prevent persistent link
sybct.max_persistent=-1		; maximum number of persistent links. -1 means no limit
sybct.max_links=-1		; maximum number of links (persistent+non persistent).  -1 means no limit
sybct.min_server_severity=10	; minimum server message severity to display
sybct.min_client_severity=10	; minimum client message severity to display

[bcmath]
bcmath.scale=0	; number of decimal digits for all bcmath functions

[browscap]
;browscap=extra/browscap.ini

[Informix]
ifx.default_host=; default host for ifx_connect() (doesn't apply in safe mode)
ifx.default_user=; default user for ifx_connect() (doesn't apply in safe mode)
ifx.default_password=; default password for ifx_connect() (doesn't apply in safe mode)
ifx.allow_persistent=On	; allow or prevent persistent link
ifx.max_persistent=-1	; maximum number of persistent links. -1 means no limit
ifx.max_links=-1	; maximum number of links (persistent+non persistent).  -1 means no limit
ifx.textasvarchar=0	; if set on, select statements return the contents of a text blob instead of it's id
ifx.byteasvarchar=0	; if set on, select statements return the contents of a byte blob instead of it's id
ifx.charasvarchar=0	; trailing blanks are stripped from fixed-length char columns. May help the life
; of Informix SE users. 
ifx.blobinfile=0	; if set on, the contents of text&byte blobs are dumped to a file instead of
; keeping them in memory
ifx.nullformat=0	; NULL's are returned as empty strings, unless this is set to 1. In that case,
; NULL's are returned as string 'NULL'.

[Session]
session.save_handler=files   ; handler used to store/retrieve data
session.save_path= C:\PHP\sessiondata    ; argument passed to save_handler
; in the case of files, this is the
; path where data files are stored
session.use_cookies=1       ; whether to use cookies
session.name=PHPSESSID  
; name of the session
; is used as cookie name
session.auto_start=0       ; initialize session on request startup
session.cookie_lifetime=0       ; lifetime in seconds of cookie
; or if 0, until browser is restarted
session.cookie_path=/       ; the path the cookie is valid for
session.cookie_domain=; the domain the cookie is valid for
session.serialize_handler=php     ; handler used to serialize data
; php is the standard serializer of PHP
session.gc_probability=1       ; percentual probability that the 
; 'garbage collection' process is started
; on every session initialization
session.gc_maxlifetime=1440    ; after this number of seconds, stored
; data will be seen as 'garbage' and
; cleaned up by the gc process
session.referer_check=; check HTTP Referer to invalidate 
; externally stored URLs containing ids
session.entropy_length=0       ; how many bytes to read from the file
session.entropy_file=; specified here to create the session id
; session.entropy_length=16
; session.entropy_file=/dev/urandom
session.cache_limiter=nocache ; set to {nocache,private,public} to
; determine HTTP caching aspects
session.cache_expire=180     ; document expires after n minutes
session.use_trans_sid=1       ; use transient sid support if enabled
; by compiling with --enable-trans-sid
url_rewriter.tags="a=href,area=href,frame=src,input=src,form=fakeentry"

[MSSQL]
mssql.allow_persistent=On	; allow or prevent persistent link
mssql.max_persistent=-1	; maximum number of persistent links. -1 means no limit
mssql.max_links=-1	; maximum number of links (persistent+non persistent).  -1 means no limit
mssql.min_error_severity=10	; minimum error severity to display
mssql.min_message_severity=10	; minimum message severity to display
mssql.compatability_mode=Off	; compatability mode with old versions of PHP 3.0.
;mssql.textlimit=4096	; valid range 0 - 2147483647 default = 4096
;mssql.textsize=4096	; valid range 0 - 2147483647 default = 4096
;mssql.batchsize=0  ; limits the number of records in each bach. 0 = all records in one batch.

[Assertion]
;assert.active=On	; assert(expr); active by default
;assert.warning=On	; issue a PHP warning for each failed assertion.
;assert.bail=Off	; don't bail out by default.
;assert.callback=0	; user-function to be called if an assertion fails.
;assert.quiet_eval=0	; eval the expression with current error_reporting(). set to true if you want error_reporting(0) around the eval().

[Ingres II]
ingres.allow_persistent=On	; allow or prevent persistent link
ingres.max_persistent=-1	; maximum number of persistent links. (-1 means no limit)
ingres.max_links=-1	; maximum number of links, including persistents (-1 means no limit)
ingres.default_database=; default database (format : [node_id::]dbname[/srv_class]
ingres.default_user=; default user
ingres.default_password=; default password

[Verisign Payflow Pro]
pfpro.defaulthost="test.signio.com"	; default Signio server
pfpro.defaultport=443	; default port to connect to
pfpro.defaulttimeout=30	; default timeout in seconds

; pfpro.proxyaddress=; default proxy IP address (if required)
; pfpro.proxyport=; default proxy port
; pfpro.proxylogon=; default proxy logon
; pfpro.proxypassword=; default proxy password
[Sockets]
sockets.use_system_read=On	; Use the system read() function instead of
; the php_read() wrapper.

; Local Variables:
; tab-width: 4
; End: