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Php Hypertext

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Understanding PHP

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PHP, the PHP Hypertext
 
 
 
Processor, is an open source
 
 
 
server-side scripting
 
 
 
language for Web servers,
 
 
 
which provides a real
 
 
 
alternative to ASP,
 
 
 
ColdFusion, Mod_Perl or JSP
 
 
 
if your aim is to provide
 
 
 
dynamic Web pages. Dynamic
 
 
 
Web pages are pages which
 
 
 
interact with the user, so
 
 
 
that each user visiting the
 
 
 
page sees customized
 
 
 
information - which may vary
 
 
 
each time and which may be
 
 
 
based on a form they've just
 
 
 
filled in, or on information
 
 
 
extracted from a database or
 
 
 
some other external source.
 
 
 
Typical applications include
 
 
 
e-commerce, online
 
 
 
newspapers, visitors' books,
 
 
 
ticketing systems, project
 
 
 
management, and other
 
 
 
groupware projects. The
 
 
 
traditional way to produce
 
 
 
this type of dynamic page is
 
 
 
via CGI scripts, but these
 
 
 
are separate programs which
 
 
 
must be executed as a new
 
 
 
process for each page hit,
 
 
 
so they scale badly and
 
 
 
rapidly become memory and
 
 
 
processor hogs as server
 
 
 
load increases...
 
 
 


Date: May, 03 2004
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