Errors in PHP

Errors and error handlers in software programming are a priceless concept that helps developers to identify failure points at the application compile-time or at runtime. They can signal different levels of severity. Hence, the script could emit a fatal error that causes the process to stop, it could emit warnings that point to possible misuse of the script, and it could also emit some notifications hinting at code improvements (for example, using an uninitialized variable in an operation). Therefore, errors are grouped in different levels, based on severity—fatal errors, warnings, notices, and debug messages, to name but a few. All these messages are usually collected to persistent storage, in a process called logging. The most accessible logging method is writing to a file on a local filesystem, and this is the default method for most (if not all) applications. These logs are read by developers to identify issues or look for other specific information, such as...