In this recipe we will focus on Step Debugging with Xdebug. With Xdebug, you can break code execution at any point, follow code execution step by step right from the beginning, and inspect all variables during a request. This is where Xdebug comes in, a PHP extension that provides debugging and profiling capabilities, which will finally speed up your development process, help you write better code and facilitate refactoring.
While these functions are usually helpful for taking a quick look at the output of your variables, they are not useful for evaluating these variables at runtime, analyzing stack traces or setting breakpoints. In our Basic error hunting & prevention recipe, we introduced some functions like var_dump(), print_r() or error_log() to help debug your variables in PHP.
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