Vim: checking PHP code (and Python and...)

Do you hate it as much as I do when you are writing some PHP (or Python or whatever) code in your favorite editor, hit 'save', reload the page in the browser in the hopes that you will see the new most awesome feature you ever wrote, but instead you are greeted by an unfriendly PARSE_ERROR_YOU_FORGOT_A_CLOSING_BRACKET_YOU_STUPID-error? Right, it feels like you just built a rocket, but upon launch you discover you didn't foresee a doorknob and can't get in anymore...

Luckily, if you are using Vim there is a nice plugin to quickly catch these errors (and more). The plugin I'm talking about is Syntastic. The plugin is built as a generic framework to run and process the result of a syntax checker. The syntax checkers themselves are specific for each language. Most of the syntax checkers start an external syntax checker or linter and return the output to Syntastic, telling it how to parse it.