In terms of keywords and language syntax, PHP is similar to most high level languages that follow the C style syntax.
if
conditions, for
and while
loops, and function returns are similar in syntax to languages such as C, C++, Java and Perl.Scripting language is a programming language that allows control of one or more applications. Scripts are often interpreted from source code or bytecode, whereas the application is typically first compiled to native machine code.
Web browsers are applications for displaying web pages. Scripts can be run by web browsers to change the appearance or behaviour of a web page. A host of special-purpose languages have been developed to control the operation of web browsers.
http://www.youtube.com/user/EducatorVids2?v=OK_o81JXyM8&feature=pyv
http://www.youtube.com/watch?v=JMhmXMdvZtQ&feature=results_main&playnext=1&list=PL6DD230A71F53179D
http://www.youtube.com/watch?v=0r4VxFdVL4Q