This is a PHP module for the Apache web server included in Mac OS X.
PHP is a server-side, cross-platform, HTML embedded scripting language.

This particular build of the module is based on the most recent version 5.2.1 of the software. It runs on Mac OS X version 10.4/Tiger and is built as Universal Binary for compatibility with both Intel and PPC Macs.

The module includes support for lots of extensions, among them the ones listed below:

• the MySQL and PostgreSQL databases
• the PDFLib PDF library
• the cURL library for various communications protocols
• the GD image creation library (with PNG, JPEG, PostScript Type 1 and TrueType font options).
• the expat XML parser and WDDX support
• XSLT transformations
• LDAP access
• the IMAP client library
• FTP client access
• exif digital camera image metadata support
• transparent session id propagation (--enable-trans-sid) option
• mcrypt encryption functions
• mhash hashing functions
• sockets extension (experimental!)
• iODBC database support
• XML-RPC support (back in after I had to remove it in a previous release)
• mhash support
• GNU gettext
• CLI Version

(description from download page)