when was it released in the market?
June 8, 1995
PHP
 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.
what is the current version of php and mysql PHP 7 what is php? A general-purpose scripting language especially suited to web development what are the various data types in it?? UNANSWERABLE how popular is it? Over 20 million Internet domains had web services hosted on servers with PHP installed and was used as the server-side programming language on 78.8% of websites can it be used for security purposes? UNANSWERABLE who is its developer? Rasmus Lerdorf when was it developed? June 8, 1995
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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.