Develop PHP
Glossary

Script : as it applies to web development technology

In programming a script is a segment of code that commands your application to execute some part of its functionality. Scripts are written differently for different languages according to syntax, and are processed by a compiler for the particular language being used by the programmer. Without a compiler or script engine in place, a script is just text characters and symbols that do nothing.

Script usually refers to code written using Javascript, PHP, ASP, AS3, or CFM. Those are all scripting languages.