Appendix . Glossary

Ad Hoc

To improvise solely in response to a particular situation and/or problem without considering wider issues.

Aggregate functions

Special SQL functions that take the values from multiple rows of data to produce a single result per grouping. Examples of aggregate functions include MIN(), MAX(), COUNT(), SUM(), and AVG().

API (Application Programming Interface)

A set of definitions by which a particular interface is accessed. The PHP API refers to the catalog of procedures and functions available for use from a userspace script.

Associative Arrays

An array indexed by associative (or string) keys. Array values are referenced by their “associated” key names.


Scripting environment provided by Microsoft for its IIS (Internet Information ...

Get Zend PHP Certification Study Guide now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.