How to analyze the source code?

I want to analyze the code to see all its errors at the initial stage. I heard that there are automatic analyzers, but I did not use them. Who can advise a good analyzer?

Define “analyze”. Define “initial stage”. What language are we talking about? What type of application?

Most IDEs will flag syntax errors.

A linter will catch other questionable things.

Things like sonar will look for even more complex mistakes, or at least questionable things “code smells”.

Things like unit tests will let you set up a test to see if your code is working properly - then if it stops working (you break something) it will alert you. These types of test can work on different scopes all the way up to end to end tests where it tests user flows through the app.