what is this above term all about?
Rasmus Lerdorf wrote several Common Gateway Interface (CGI) programs in C, which he used to maintain his personal homepage and then extended them to work with web forms and to communicate with databases.
PHP
 Rasmus Lerdorf wrote several Common Gateway Interface (CGI) programs in C, which he used to maintain his personal homepage. He extended them to work with web forms and to communicate with databases,
what is the meaning of .= in php It  is a general-purpose scripting language especially suited to web development. what is the full form of this abbreviated word? Personal Home Page
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PHP [SEP] Early history
PHP development began in 1994 when Rasmus Lerdorf wrote several Common Gateway Interface (CGI) programs in C, which he used to maintain his personal homepage. He extended them to work with web forms and to communicate with databases, and called this implementation "Personal Home Page/Forms Interpreter" or PHP/FI. PHP/FI could be used to build simple, dynamic web applications. To accelerate bug reporting and improve the code, Lerdorf initially announced the release of PHP/FI as "Personal Home Page Tools (PHP Tools) version 1.0" on the Usenet discussion group "comp.infosystems.www.authoring.cgi" on June 8, 1995. This release already had the basic functionality that PHP has today.