"Statistics and reports analyze the change over time of any kind
of phenomena. For example, you could evaluate an employer's
performance by analyzing progress curves provided by reports;
managers can make business decisions based on statistical sales
data; meteorologists can predict natural disasters based on
statistical weather pattern data--and the list goes on. For the
software industry, statistics and reports provide both an ongoing
challenge and an ongoing market. At present, programming languages
such as PHP and Java come with built-in packages for developing
applications around statistical problems.
"This article explores PHP's support for the statistical domain.
You will see how to generate reports and statistics for simple text
phrases, XML documents, and complex databases..."