When you come across an old piece of code, that's not written well or that could've been written better, what do you do?

Comment your answer if none of the following options are applicable.

What are some simple coding / IDE tips and tricks that improved your productivity?

One of the simplest tricks I learnt while pairing was that while creating a new test class, open existing test, duplicate the existing template for tests, rename and then extract to new file. Another simple example is don't type the left side of decl...

Do you follow any specific pattern when refactoring code? Please talk in detail.

Code optimization vs readable code

Assuming you have a code such as this: foreach ($products as $product) { process(product); if(somecondition){ doSomething(product); } } How bad would you consider this form of refactoring? foreach ($products as $product) { ...