PHP stands for Hypertext Preprocessor and it’s an open source, server-side, HTML embedded scripting language used to create dynamic Web pages. In an HTML document, PHP
script (similar syntax to that of Perl or C ) is enclosed within special PHP tags. In turn this can allow an author to jump between HTML and PHP Because PHP (similar to ASP and Cold Fusion) unlike having to rely on heavy amounts of code to output HTML. And, because PHP is executed on the server, the client cannot view the PHP code. PHP can perform any task that any Common Gateway Interface (CGI) program can do, but its strength lies in its compatibility with many types of databases.
PHP can also talk across networks using IMAP, SNMP, NNTP, POP3, or HTTP. PHP was created sometime in 1994 by Rasmus Lerdorf. During mid 1997, PHP development entered the hands of other contributors. Two of them, Zeev Suraski and Andi Gutmans, rewrote the parser from scratch to create PHP version 3 (PHP3).