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–PHP stands for "PHP Hypertext Preprocessor”

–An embedded scripting language for HTML like ASP or JSP

–A language that combines elements of Perl, C, and Java


The History of PHP. PHP is an "HTML-embedded scripting language" primarily used for dynamic Web applications. ... PHP was written in the C programming language by Rasmus Lerdorf in 1994 for use in monitoring his online resume and related personal information. For this reason, PHP originally stood for "Personal Home Page".


Zdnet Statistics PHP pumped out about 47

pages/second Microsoft ASP pumped out

about 43 pages/second Allaire ColdFusion pumped out

about 29 pages/second Sun Java JSP pumped out

about 13 pages/second


Like Perl, there is more than one way to do it

<?php echo “Hello World!”; ?> <?php

$greeting = “Hello World!” printf(“%s”, $greeting);php?>


Constants define a string or numeric value

Constants do not begin with a dollar sign Examples: define(“COMPANY”, “Acme Enterprises”); define(“YELLOW”, “#FFFF00”); define(“PI”, 3.14); define(“NL”, “<br>\n”);


What Come in the Box?

Array Manipulator Functions sort, merge, push, pop, slice, splice,

keys, count CCVS: Interface to Red Hat’s credit

system COM functions: Interface to Windows

COM objects Date and Time Functions getdate, mkdate, date, gettimeofday,

localtime, strtotime, time


What Come in the Box?

Array Manipulator Functions CCVS: Interface to Red Hat’s credit

system COM functions: Interface to

Windows COM objects Date and Time Functions Directory Functions Filesystem Functions IMAP Functions Mail Functions

Database Functions MING PDF POSIX Functions Regular Expression

Functions Semaphore and Socket

Functions Session Management

Functions


Code Portability–if( ereg("WIN", PHP_OS) ){ $ApachePath = “C:/Program Files/Apache Group/Apache”; $ConfigPath = ”$ApachePath/htdocs/conf"; $DataPath = "$ApachePath/htdocs/data";}

$ConfigFile = "$ConfigPath/paperwork.conf";$CountryList = "$DataPath/countries.txt";$StateAbbrList = "$DataPath/usstateabbrs.txt";$StateNameList = "$DataPath/usstatenames.txt";


Release Date ???Features Complete objects Objects with constructors Abstract classes Private, protected and

abstract functions Private, protected and

constant variables Namespaces Exception handling with

try/catch blocks


PHP Downloads and Online Documentation

www.php.net Community www.phpbuilder.com: articles

on PHP, discussion forums www.phpresourceindex.com:

over 1,000 PHP scripts www.phpvolcano.com: PHP 5

information Newsgroups comp.lang.php


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php training institute in ambala

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