"A special application called a debugger probes running code,
allowing you to suspend execution arbitrarily, examine objects,
explore the call stack, and even change the value of a variable on
the fly. Learn how to use a debugger to squash bugs in your PHP
"According to popular folklore, the first computer bug was
literally a bug--specifically, an ill-fated moth that landed in a
relay in the Mark II Aiken Relay Calculator being tested at Harvard
University. According to the operator's log entry dated 09 Sep
1947, the moth was the 'First actual case of [a] bug being found
[in a computer]...'"
Some of the products that appear on this site are from companies from which QuinStreet receives compensation. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. QuinStreet does not include all companies or all types of products available in the marketplace.