Whoops

Whoops is a PHP library that improves the debugging experience by handling uncaught exceptions and presenting beautiful error pages. Instead of a cryptic “fatal error,” Whoops catches the exception and renders a detailed stack trace with syntax-highlighted code snippets, variable values, and clickable frames to navigate between calls. It can be integrated into frameworks or standalone scripts so developers consistently get readable, informative pages during development. Beyond error pages, Whoops supports custom handlers, logging, and filtering so exceptions can be gracefully transformed or reported. Because it only activates in development by default, it avoids revealing internal application state in production. Developers use Whoops to shorten debugging cycles, reduce the frustration of tracing issues, and maintain cleaner error surfaces across applications.