PHP 7 Error Handling

PHP 7 changes the way most errors are reported. Unlike PHP 5's traditional error reporting mechanism, most errors are now thrown asErrorexceptions.

This kind of Error exception can be caught by try / catch block like a normal exception. If there is no matching try / catch block, the exception handling function (registered by set_exception_handler()) is called for processing. If an exception handler has not been registered, it is handled in the traditional way: it is reported as a Fatal Error.

The Error class does not extend from the Exception class, so code such as catch (Exception $e) { ... } cannot catch Error. You can use code like catch (Error $e) { ... } or register an exception handler (set_exception_handler()) to catch Error.

Error Exception Hierarchy

• Error
  • ArithmeticError
  • AssertionError
  • DivisionByZeroError
  • ParseError
  • ##TypeError
##Exception
• ...

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