Krumo

To put it simply, Krumo is a replacement for print_r(); and var_dump();. By definition Krumo is a debugging tool (PHP4/PHP5), which displays structured information about any PHP variable.

A lot of developers use print_r() and var_dump() in the means of debugging tools. Although they were intended to present human readable information about a variable, we can all agree that in general they are not. Krumo is an alternative: it does the same job, but it presents the information beautified using CSS and DHTML.