Q-1: What is PHP?
PHP is server side scripting language for web application development.It supports many databases like MySQL, Sybase, Oracle, Solid, PostgreSQL etc. PHP means PHP: Hypertext Preprocessor
PHP syntax resembles from Perl and C
PHP father : Rasmus Lerdorf

Q-2: What is PEAR in PHP?
PEAR stands for PHP Extension and Application Repository.PEAR is a framework and repository for reusable PHP components.

Q-3: How can we display the output directly to the browser?
<?= ?>