Page 292 - Open Soource Technologies 304.indd

Web Technologies-I

Notes CURL functions, you must install CURL, Version 7.0.2-beta or later, and compile PHP with the
with-curl [=DIR] directive.

Cybercash
Cybercash is a provider of credit-card processing services. The Cybercash functions provide
access to Cybercash transactions from PHP. To use the Cybercash functions, you must install
the Cybercash libraries and compile PHP with the with-cybercash[=DIR] directive.
CyberMUT
CyberMUT is a financial transaction service from Crédit Mutuel. To use CyberMUT, you must
install CyberMUT and compile PHP with the with-cybermut[=DIR] directive.
dBase
Although not recommended for use in production, the dBase library provides access to dBase-
formatted database files, which are used in some Windows programs. Typically, you should
use these functions only to import data from and export data to a dBase database. To enable
the dBase extension, you must compile PHP with the enable-dbase directive.
DBM
For very simple database installations, you can use the DBM-style database library. These
functions allow you to store records in simple database files. This library is essentially a subset
of the DBM-style database abstraction library and is now deprecated. To use these functions,
you must compile PHP with the with-db directive.
DBM-Style Database Abstraction
For very simple database installations, you can use the DBM-style database abstraction library.
These functions allow you to store records in simple database files. The database files created
through this library store simple key/value pairs and are not intended as replacements for full-
scale relational databases. To use these functions, you must install the appropriate library and
compile PHP with the appropriate options: with-dbm for original Berkeley database files, with-
ndbm for the newer Berkeley database style, with-gdbm for GNU’s version of DBM, with-db2
or with-db3 for Sleepycat Software’s DB2 and DB3, and with-cdb for Cdb support.

EXIF
The Exchangeable Image File Format (EXIF) extension provides a function to read the information
stored on a device; many digital cameras store their information in EXIF format. To use it, you
must install EXIF and compile PHP with the with-exif[=DIR] directive.
FDF
The Forms Data Format (FDF) is a library for creating forms in PDF documents and extracting
data from or populating those forms. The FDF extension allows you to interpret data from an
FDF-enabled PDF document or to add FDF form fields to a PDF document. To enable the FDF
extension, you must install the FDF toolkit (FDFTK) and compile PHP with the with-fdftk[=DIR]
directive.

FTP
This extension provides access to remote file servers using FTP. Much of the functionality of
this extension is provided by default in PHP’s file-handling functions. To enable this extension,
you must compile PHP with the enable-ftp directive.
GMP

If you need more precision in numbers than PHP provides by default with its built-in floating-
point numbers, you can use the GNU MP (GMP) library. It provides support for arbitrary
precision mathematics.

286 LOVELY PROFESSIONAL UNIVERSITY