If you are having trouble getting extensions to run and changes to php.ini don't seem to make a jot of difference you may find that your php.ini is not being read and you are running on defaults.
The good news is that Elsint's fix (dated 26-Sep-2006) still works for php 5.2.6 under Windows Server 2003 SP2, on IIS6, running php as an ISAPI module.
Diagnostic:
run a test file
<php
phpinfo();
?php>
Load this in a browser and search the results for "Loaded Configuration File". This points to the .ini file in use, which I have found is not always the one I have been editing ...
If your problem is with extensions: search for extension_dir in the phpinfo() results. If the entry which follows is C:\PHP5, or some other directory which does not exist on your drive you may need the registry fix. The alternative is to put the php.ini file somewhere along the search path, but this is not quite as clean.
Background:
If you run the installer packages: php-5.2.5-win32-installer.msi or php-5.2.6-win32-installer.msi and choose the default install directory the following registry entires are added
HKEY_LOCAL_MACHINE
SOFTWARE
PHP
InstallDir REG_SZ C:\Program Files\PHP\
WebServerType REG_SZ iis4ISAPI
However, the installers above do not create the IniFilePath registry entry.
So: you either go for a direct registry hack or create and run a registry file named: "[whatever].reg"
If your install directory is the default for the above installers the contents should be the 4 (four) lines below (counting the blank one!) between the pseudo tags.
<whatever.reg>
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\PHP]
"IniFilePath"="C:\\Program Files\\PHP"
</whatever.reg>
(Note you have to have the double backslashes for the .reg file to work even though Windows reports it worked without them).
Once you have the new registry key in place you may find it sufficient to restart the World Wide Web Publishing Service, which is also restarted if you take the slightly longer option of restarting the IIS Admin Service.
If this works for you and you want to backtrack by undoing the registry changes to test if this was the fix that did it: you may need a reboot (not just a service restart) because of some rather irritating persistencies.
Windows 用 PHP 拡張モジュール
Windows に PHP を インストールし、Web サーバの設定ができたら、 次は PHP 拡張モジュールを使うための設定です。 php.ini を使って PHP が起動時にロードする拡張モジュールを設定することができます。 もしくは、スクリプトの中で dl() 関数を使用することにより、 拡張モジュールを動的にロードすることも可能です。
PHP 拡張モジュールの DLL には、ファイル名の前に 'php_' が付いています。
Windows 版の PHP には、多くの拡張モジュールが 組み込まれています。これらの関数を使用する際には、 追加の DLL ファイルや extension ディレクティブの設定は不要です。 追加の DLL が必要となる (あるいはかつて必要だった) 拡張モジュールについては、 Windows 版 PHP 拡張モジュール の表にまとめてあります。以下にあげられている拡張モジュールは、すでに PHP に組み込まれています。
PHP 4 (PHP 4.3.11 時点): BCMath、 Caledar、 COM、 Ctype、 FTP、 MySQL、 ODBC、 Overload、 PCRE、 Session、 Tokenizer、 WDDX、 XML そして Zlib
PHP 5 (PHP 5.0.4 時点) では、さらに以下が組み込まれています。 DOM、 LibXML、 Iconv、 SimpleXML、 SPL そして SQLite。 また、以下は組み込まれなくなりました。 MySQL および Overload。
PHP が拡張モジュールを探すデフォルトの場所は PHP 4 の場合 C:\php4\extensions、 PHP 5 の場合 C:\php5 です。 変更するには php.ini ファイルを編集してください。
-
extension_dir を拡張モジュール があるフォルダに変更する必要があります。 php_*.dllファイルをそこに置いてください。 例えば次のようになります。
extension_dir = c:\php\extensions
-
php.ini には、多くの拡張モジュール名がコメントアウトされた状態で記載済みです。 それらの拡張モジュールを有効にするには、php.ini 上の extension=php_*.dll の行をアンコメント(行頭の ; を削除する)してください。
例1 Windows 版の PHP で Bzip2 拡張モジュールを有効にする
// この行を以下から ;extension=php_bz2.dll // このように変更する extension=php_bz2.dll
-
拡張モジュールによっては、その動作に外部 DLL が必要な場合があります。 配布パッケージには、一部の外部 DLL がバンドルされています。 PHP 4 の場合は C:\php\dlls\を、 PHP 5 の場合は親フォルダを参照ください。ただし、必要な外部 DLL がバンドルされていないモジュールもあり、たとえば、Oracle モジュール (php_oci8.dll) は、非バンドルの DLL を必要とします。 PHP 4 をインストールする場合、バンドルされた DLL を C:\php\dlls からメインのフォルダ C:\php へコピーしてください。 また、忘れずに C:\php をシステムパスに 追加してください(その方法は、別途 FAQ に記載されています。)
-
これらの DLLs の中には、PHP の配布ファイルに含まれていないものもあります。 詳細は、それぞれの拡張モジュールのドキュメントを参照ください。 また、PECL についての詳細は、マニュアルの PECL 拡張モジュールのインストール という節を参照ください。多くの PHP 拡張モジュールが PECL に移行しつつあり、これらは 個別にダウンロード しなければなりません。
注意: PHP をサーバモジュールとして実行している場合は、Webサーバを再起動しないと、 php.ini の設定が反映されません。Web サーバの再起動を忘れずに行ってください。
以下の表は、使用可能な拡張モジュールと それらの実行に別途必要な DLL のリストです。
| 拡張モジュール | 説明 | 備考 |
|---|---|---|
| php_bz2.dll | bzip2 圧縮関数 | |
| php_calendar.dll | カレンダー 関数 | PHP 4.0.3 以降ビルトイン |
| php_crack.dll | Crack 関数 | |
| php_ctype.dll | 文字型(ctype) 関数 | PHP 4.3.0 以降ビルトイン |
| php_curl.dll | CURL, Client URL Library 関数 | libeay32.dll および ssleay32.dll が必要 (バンドル) |
| php_dba.dll | DBA: (dbm 型の) データベース・アブストラクション レイヤー関数 | |
| php_dbase.dll | dBase 関数 | |
| php_dbx.dll | dbx 関数 | |
| php_domxml.dll | DOM XML 関数 | PHP <= 4.2.0 では libxml2.dll が必要 (バンドル), PHP >= 4.3.0 では iconv.dll が必要 (バンドル) |
| php_dotnet.dll | .NET 関数 | PHP <= 4.1.1 |
| php_exif.dll | EXIF 関数 | php_mbstring.dll。php.ini で php_exif.dll は php_mbstring.dll の後で読み込まれる必要がある。 |
| php_fbsql.dll | FrontBase 関数 | PHP <= 4.2.0 |
| php_fdf.dll | FDF: Forms Data Format 関数 | fdftk.dll が必要 (バンドル) |
| php_filepro.dll | filePro 関数 | 読み込みのみ |
| php_ftp.dll | FTP 関数 | PHP 4.0.3 以降ビルトイン |
| php_gd.dll | イメージ 関数 (GD ライブラリ) | PHP 4.3.2以降で削除。トゥルーカラー関数は GD1 では使用できない。 代わりに php_gd2.dll を使用のこと。 |
| php_gd2.dll | イメージ 関数 (GD2 ライブラリ) | GD2 |
| php_gettext.dll | Gettext 関数 | PHP <= 4.2.0 では gnu_gettext.dll が必要 (バンドル), PHP >= 4.2.3 では libintl-1.dll および iconv.dll が必要(バンドル) |
| php_hyperwave.dll | HyperWave 関数 | |
| php_iconv.dll | ICONV 関数 | iconv-1.3.dll が必要(バンドル)、 PHP >=4.2.1 iconv.dll |
| php_ifx.dll | Informix 関数 | Informix ライブラリが必要 |
| php_iisfunc.dll | IIS management 関数 | |
| php_imap.dll | IMAP,POP3,NNTP 関数 | |
| php_ingres.dll | Ingres II 関数 | Ingres II ライブラリが必要 |
| php_interbase.dll | InterBase 関数 | gds32.dll が必要(バンドル) |
| php_java.dll | Java 関数 | PHP <= 4.0.6 で jvm.dll が必要(バンドル) |
| php_ldap.dll | LDAP 関数 | PHP <= 4.2.0 では libsasl.dll が必要(バンドル), PHP >= 4.3.0 では libeay32.dll と ssleay32.dll が必要(バンドル) |
| php_mbstring.dll | マルチバイト文字列 関数 | |
| php_mcrypt.dll | Mcrypt 暗号化 関数 | libmcrypt.dll が必要 |
| php_mhash.dll | Mhash 関数 | PHP >= 4.3.0 で libmhash.dll が必要(バンドル) |
| php_mime_magic.dll | Mimetype 関数 | magic.mime が必要(バンドル) |
| php_ming.dll | Ming 関数 (Flash 用) | |
| php_msql.dll | mSQL 関数 | msql.dll が必要(バンドル) |
| php_mssql.dll | MSSQL 関数 | ntwdblib.dll が必要(バンドル) |
| php_mysql.dll | MySQL 関数 | PHP >= 5.0.0。libmysql.dll が必要(バンドル) |
| php_mysqli.dll | MySQLi 関数 | PHP >= 5.0.0。libmysql.dll (PHP <= 5.0.2 では libmysqli.dll) が必要(バンドル) |
| php_oci8.dll | Oracle 8 関数 | Oracle 8.1+ クライアントライブラリが必要 |
| php_openssl.dll | OpenSSL 関数 | libeay32.dll が必要(バンドル) |
| php_overload.dll | オブジェクトオーバーロード 関数 | PHP 4.3.0 以降ビルトイン |
| php_pdf.dll | PDF 関数 | |
| php_pgsql.dll | PostgreSQL 関数 | |
| php_printer.dll | プリンタ 関数 | |
| php_shmop.dll | 共有メモリ 関数 (shmop) | |
| php_snmp.dll | SNMP 関数 | NT のみ |
| php_soap.dll | SOAP 関数 | PHP >= 5.0.0 |
| php_sockets.dll | ソケット 関数 | |
| php_sybase_ct.dll | Sybase 関数 | Sybase クライアントライブラリが必要 |
| php_tidy.dll | Tidy 関数 | PHP >= 5.0.0 |
| php_tokenizer.dll | Tokenizer 関数 | PHP 4.3.0 以降ビルトイン |
| php_w32api.dll | W32api 関数 | |
| php_xmlrpc.dll | XML-RPC 関数 | PHP >= 4.2.1 で iconv.dll が必要(バンドル) |
| php_xslt.dll | XSLT 関数 | PHP <= 4.2.0 では sablot.dll と expat.dll が必要(バンドル)。 PHP >= 4.2.1 では sablot.dll, expat.dll および iconv.dll が必要(バンドル) |
| php_yaz.dll | YAZ 関数 | yaz.dll が必要(バンドル) |
| php_zip.dll | Zip ファイル 関数 | 読込のみ |
| php_zlib.dll | ZLib 圧縮関数 | PHP 4.3.0 以降ビルトイン |
Windows 用 PHP 拡張モジュール
17-Jul-2008 11:06
07-Jun-2008 08:46
If you get errors like this:
PHP Notice: Constant XML_ELEMENT_NODE already defined in Unknown on line 0
And many more complaining about XML constants, comment out the line:
extension=php_domxml.dll
in your php.ini. That extension seems to be compiled into PHP when you get those errors or something else is including the functionality before that dll.
15-Feb-2008 11:51
== Problem
Consider the following from an httpd.conf file...
LoadModule php5_module "E:/xyz/php/php5apache2_2.dll"
PHPIniDir "E:/xyz/php"
...which led to the dreaded...
PHP Warning: PHP Startup: Unable to load dynamic library 'E:\\xyz\\php\\ext\\php_mysql.dll' - The specified module could not be found.
Note, however, that PHP.exe apparently was found and executed php pages in Apache, but the MySQL functions therein failed.
== Solution
Because PHP dir was not in $PATH, php5apache2_2.dll failed to find php_mysql.dll (the only extension I enabled) during Apache 2.2 start.
== Caveat (!)
The BIG issue is that, setting $PATH in...
<desk icon>My Computer
<rt click>Properties
<tab>Advanced
<button>Environment Variables
...didn't export the $PATH change such that restarting the Apache service (in MMC) would pick it up. So I tested the working solution (adding PHP dir to $PATH), but it failed because of HOW I set it. It succeeded only when I REBOOTED after changing the $PATH. There may be an easier way that this, but I do not know it at present.
== Comment
Consider whether PHP dir should need to be in $PATH at all, when PHP.exe apparently was found and executes php pages in Apache, but php5apache2_2.dll failed to find whatever was needed to load the extensions. This should perhaps be addressed.
Note that on a WAMP installation (W2K,Apache,MySQL,PHP), only PHP is required in $PATH.
30-Jan-2008 01:10
As far as my experience says, 95% of ext\php_mysql.dll - The specified module could not be found - error can be sorted out on Win 2003, IIS 6, PHP5.2.
Replace the php_mysql.dll and libmysql.dll downloaded from http://dev.mysql.com/downloads/connector/php/ into extensions directory.
For MSSQL connectivity problems, replace the ntwdblib.dll in php dir with the one copied from system32 directory. Ofcourse the filesize will be less, no problem, replace it.
22-Sep-2007 02:00
Under windows, given an error similar to
PHP Warning: PHP Startup: Unable to load dynamic library 'c:\\php\\ext\\php_mysql.dll' - The specified module could not be found.\r\n in Unknown on line 0
When PHP definitely should be able to find the module, it's fairly common knowledge that this error can also be caused by certain dlls not being in the PATH. These dlls (usually libeay32 and ssleay32) are generally found in your base php directory, and the modern windows installers add the base php directory to the PATH so that you don't need to worry about it. However, if when installing earlier versions you decided on moving libeay32, ssleay32 et al to C:\Windows\System32 instead of changing the PATH, then php will still end up with the old versions and the out of date versions will cause the same error as above. Don't fall into the trap like I did.
30-Aug-2007 10:12
Installing PHP extensions for IIS for the first time is sort of a baptism by fire -- you will get your hands dirty, and other suitable metaphors of nastiness. Hopefully, you won't have to spend too many days googling around fora and restarting IIS 10 million times as I did until I finally realized both what was going on and what crazy things I'd done wrong.
THIS (peter)guy really goes into terrific detail and troubleshooting, (with very good reasons and explanations of extension dependencies not listed on the current php page you're now reading):
http://www.peterguy.com/php/install_IIS6.html
Most of this is applicable for IIS5.1 as well, as far as I've found.
The main problem I'd been butting my head up against was extensions being reported as not found, even though the .DLLs were definitely in C:\PHP\ext, and my PATH env var was setup correctly.
The error messaging during dynamic loading of implicitly-linked libraries should be more specific, telling you that in fact it is a particular dependency of a dependency which is missing -- usually some obscure third-party .dll -- and name it!
Eventually I stopped being so greedy and just cut down on the extensions I thought I needed by commenting them out in php.ini. That eliminated the startup errors. Apparently some of these extensions or their requirements, which either come with the base PHP install zip or the PECL extensions, are either too obscure or too fragile to be necessary anyway.
Good luck, and I hope anyone who runs into the same trouble can hit upon this or Peter Guy's page directly before they go too crazy.
13-Feb-2007 09:51
When confronted with the problem "PHP Warning: PHP Startup: Unable to load dynamic library './php_mysql.dll' - Access is denied.\r\n in Unknown on line 0" I found I had to make the permissions "chmod.exe 755 php_mysql.dll"
(This is on a Windows XP, but I am running Cygwin).
15-Nov-2006 10:10
I just installed PHP5.2 + Apache2.2 + MySQL5 on Windows XP. Three imporatant things.
1. I tryed to put php.ini in windows directory like in early version. But php can't load it and using default values only. After I put php.ini into php installation directory, everything is fine.
2. You still need to copy libmysql.dll to windows\system32 directory for the mysql extension to work.
3. Don't forget for apache 2.2, you need php5apache2_2.dll instead of php5apache2.dll.
12-Oct-2006 03:11
We tried to install PHP 4 ISAPI Module on IIS 6 on a Windows Server 2003 SP2 at the office.
The only way we found out to make these extensions work, is by putting the extensions DLLs in the System32\inetsrv in the Windows directory. We did the same previously with the
php4isapi.dll and php4ts.dll to make PHP work. The system was asking for a password previously.
We cannot explain it, it seems like a problem only occuring with SP2 installed because we never had this problem before. Giving the right permission to the PHP and extensions folders didn't do anything good. It always gave use a permission denied error. We even tried to give full control to Everyone on the PHP folder, same result.
I hope it can help.
26-Sep-2006 08:38
Installing PHP5.1.6 on an IIS5.1 system.
Some extensions are not working because of registry(like LDAP).
You need to create a registry file named: "inifilepath.reg"
Content should be the 3 lines under,be sure to define your PHP path correct:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\PHP]
"IniFilePath"="C:\\PHP"
After creating this file, double click it, click yes, and restart IIS. Hopefully this might solve problem for some, as it solved for me.
17-Aug-2006 10:10
I had problems with PHP5/Apache2.2/MySQL 5 installation on a WinXp machine.
I got the
Fatal error: call to undefined function - mysql_connect().
message
Solution :
1, use correct version of ext\php_mysql.dll and libmysql.dll
2, !!! edit the CORRECT php.ini (%windir%\php.ini) like c:\windows\php.ini !!!
3, add php installation dir to PATH
4, edit php.ini to load extension php_mysql.dll
use
<?php
phpinfo();
?>
to check.
07-Apr-2006 10:54
If You try to install PHP5 to IIS6 with Oracle....
Then You need some kind of pilot-exams, not for big planes, just a little one.
So: After installations (php.ini is correct see above ie.: extenstion = php_oci8.dll etc)
If You use anonymous access, You'll have a builtin user to use it. Make this user local administrator, or give minimum read access to PHP folder (ie.: c:\php) and ORAHOME (ie. c:\ora92) folders.
If You use Windows Integrated authentication, give for Domain Users minimum read access to PHP folder (ie.: c:\php) and ORAHOME (ie. c:\ora92) folders.
Goog luck.
19-Aug-2004 06:35
[editor note: this should be fixed in PHP 5.1.0]
The order of the extensions listed in php.ini is causing problems... one must check that a particular extension A is enabled and above extension B if B requires A to be enabled.
The original ordering doesnt make sure that this always happens (ie, A is above B)
I came into this problem when I tried to enable the exif extension under windows. I knew mbstring is required but I kept getting errors even after I enabled both.
The problem can only be fixed by moving the mbstring line above the exif line...
