Mastering PHP 7

Uncaught error handler

While a great deal of Error can now be caught via try...catch, there is also an extra mechanism to handle errors. PHP provides a mechanism in the form of a set_error_handler() function that allows us to define a custom handler function for all uncaught errors. The set_error_handler() function accepts two parameters, as per the following description:

    mixed set_error_handler (       callable $error_handler       [, int $error_types = E_ALL | E_STRICT ]     )

The $error_handler function is either a handler function name passed as string, or entire anonymous handler function, whereas $error_types is one or more (separated by |) masks specifying the type of error. The handler function itself also accepts several parameters, as per ...