How do `try...catch` blocks work in PHP for error handling?

The `try` block encloses code that might throw an exception. If an exception is thrown within the `try` block, the execution immediately jumps to the corresponding `catch` block. You can have multiple `catch` blocks to handle different types of exceptions. The `finally` block (optional) executes regardless of whether an exception was thrown or caught, often used for cleanup tasks like closing database connections.