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PHP Manual

## Installation of extensions on Windows

After installing PHP and a web server on Windows, you will probably want to install some extensions for added functionality. You can choose which extensions you would like to load when PHP starts by modifying your php.ini. You can also load a module dynamically in your script using dl().

The DLLs for PHP extensions are prefixed with php_.

Many extensions are built into the Windows version of PHP. This means additional DLL files, and the extension directive, are not used to load these extensions. The Windows PHP Extensions table lists extensions that require, or used to require, additional PHP DLL files. Here's a list of built in extensions:

In PHP 4 (updated PHP 4.3.11): BCMath, Caledar, COM, Ctype, FTP, MySQL, ODBC, Overload, PCRE, Session, Tokenizer, WDDX, XML 그리고 Zlib

In PHP 5 (updated PHP 5.0.4), the following changes exist. Built in: DOM, LibXML, Iconv, SimpleXML, SPL 그리고 SQLite. And the following are no longer built in: MySQL and Overload.

The default location PHP searches for extensions is C:\php4\extensions in PHP 4 and C:\php5 in PHP 5. To change this setting to reflect your setup of PHP edit your php.ini file:

- You will need to change the extension_dir setting to point to the directory where your extensions lives, or where you have placed your php_*.dll files. For example:

      extension_dir = C:\php\extensions

- Enable the extension(s) in php.ini you want to use by uncommenting the extension=php_*.dll lines in php.ini. This is done by deleting the leading ; from the extension you want to load.

  Example #1 Enable Bzip2 extension for PHP-Windows

      // change the following line from ...
      ;extension=php_bz2.dll

      // ... to
      extension=php_bz2.dll

- Some of the extensions need extra DLLs to work. Couple of them can be found in the distribution package, in the C:\php\dlls\ folder in PHP 4 or in the main folder in PHP 5, but some, for example Oracle (php_oci8.dll) require DLLs which are not bundled with the distribution package. If you are installing PHP 4, copy the bundled DLLs from C:\php\dlls folder to the main C:\php folder. Don't forget to include C:\php in the system PATH (this process is explained in a separate FAQ entry).

- Some of these DLLs are not bundled with the PHP distribution. See each extensions documentation page for details. Also, read the manual section titled Installation of PECL extensions for details on PECL. An increasingly large number of PHP extensions are found in PECL, and these extensions require a separate download.

> Note: If you are running a server module version of PHP remember to restart your web server to reflect your changes to php.ini.

The following table describes some of the extensions available and required additional dlls.

PHP Extensions
Extension | Description | Notes
--- | --- | ---
php_bz2.dll | bzip2 compression functions | None
php_calendar.dll | Calendar conversion functions | Built in since PHP 4.0.3
php_crack.dll | Crack functions | None
php_ctype.dll | ctype family functions | Built in since PHP 4.3.0
php_curl.dll | CURL, Client URL library functions | Requires: libeay32.dll, ssleay32.dll (bundled)
php_dba.dll | DBA: DataBase (dbm-style) Abstraction layer functions | None
php_dbase.dll | dBase functions | None
php_dbx.dll | dbx functions |
php_domxml.dll | DOM XML functions | PHP <= 4.2.0 requires: libxml2.dll (bundled) PHP >= 4.3.0 requires: iconv.dll (bundled)
php_dotnet.dll | .NET functions | PHP <= 4.1.1
php_exif.dll | EXIF functions | php_mbstring.dll. And, php_exif.dll must be loaded after php_mbstring.dll in php.ini.
php_fbsql.dll | FrontBase functions | PHP <= 4.2.0
php_fdf.dll | FDF: Forms Data Format functions. | Requires: fdftk.dll (bundled)
php_filepro.dll | filePro functions | Read-only access
php_ftp.dll | FTP functions | Built-in since PHP 4.0.3
php_gd.dll | GD library image functions | Removed in PHP 4.3.2. Also note that truecolor functions are not available in GD1, instead, use php_gd2.dll.
php_gd2.dll | GD library image functions | GD2
php_gettext.dll | Gettext functions | PHP <= 4.2.0 requires gnu_gettext.dll (bundled), PHP >= 4.2.3 requires libintl-1.dll, iconv.dll (bundled).
php_hyperwave.dll | HyperWave functions | None
php_iconv.dll | ICONV characterset conversion | Requires: iconv-1.3.dll (bundled), PHP >=4.2.1 iconv.dll
php_ifx.dll | Informix functions | Requires: Informix libraries
php_iisfunc.dll | IIS management functions | None
php_imap.dll | IMAP POP3 and NNTP functions | None
php_ingres.dll | Ingres functions | Requires: Ingres libraries
php_interbase.dll | InterBase functions | Requires: gds32.dll (bundled)
php_java.dll | Java functions | PHP <= 4.0.6 requires: jvm.dll (bundled)
php_ldap.dll | LDAP functions | PHP <= 4.2.0 requires libsasl.dll (bundled), PHP >= 4.3.0 requires libeay32.dll, ssleay32.dll (bundled)
php_mbstring.dll | Multi-Byte String functions | None
php_mcrypt.dll | Mcrypt Encryption functions | Requires: libmcrypt.dll
php_mhash.dll | Mhash functions | PHP >= 4.3.0 requires: libmhash.dll (bundled)
php_mime_magic.dll | Mimetype functions | Requires: magic.mime (bundled)
php_ming.dll | Ming functions for Flash | None
php_msql.dll | mSQL functions | Requires: msql.dll (bundled)
php_mssql.dll | MSSQL functions | Requires: ntwdblib.dll (bundled)
php_mysql.dll | MySQL functions | PHP >= 5.0.0, requires libmysql.dll (bundled)
php_mysqli.dll | MySQLi functions | PHP >= 5.0.0, requires libmysql.dll (libmysqli.dll in PHP <= 5.0.2) (bundled)
php_oci8.dll | Oracle 8 functions | Requires: Oracle 8.1+ client libraries
php_openssl.dll | OpenSSL functions | Requires: libeay32.dll (bundled)
php_overload.dll | Object overloading functions | Built in since PHP 4.3.0
php_pdf.dll | PDF functions | None
php_pgsql.dll | PostgreSQL functions | None
php_printer.dll | Printer functions | None
php_shmop.dll | Shared Memory functions | None
php_snmp.dll | SNMP get and walk functions | NT only!
php_soap.dll | SOAP functions | PHP >= 5.0.0
php_sockets.dll | Socket functions | None
php_sybase_ct.dll | Sybase functions | Requires: Sybase client libraries
php_tidy.dll | Tidy functions | PHP >= 5.0.0
php_tokenizer.dll | Tokenizer functions | Built in since PHP 4.3.0
php_w32api.dll | W32api functions | None
php_xmlrpc.dll | XML-RPC functions | PHP >= 4.2.1 requires: iconv.dll (bundled)
php_xslt.dll | XSLT functions | PHP <= 4.2.0 requires sablot.dll, expat.dll (bundled). PHP >= 4.2.1 requires sablot.dll, expat.dll, iconv.dll (bundled).
php_yaz.dll | YAZ functions | Requires: yaz.dll (bundled)
php_zip.dll | Zip File functions | Read only access
php_zlib.dll | ZLib compression functions | Built in since PHP 4.3.0

Building from source
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PHP Manual