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Slawek Lukasiewicz's Blog:
Throwing Exception with Type Hinting Failed
August 10, 2011 @ 09:58:57

Slawek Lukasiewicz has a helpful hint posted to his blog today about handling type hinting failures in a what he sees as a "more correct" way than just throwing an error - throwing an exception when the hinting criteria's not met.

One of the most annoying behavior of PHP type hinting feature is triggering error instead of throwing exception when instance type is invalid.

By default, a failure generates a "catchable error" that, thanks to the custom error handling methods PHP includes, can be correctly handled. He includes a snippet of code that defines the errorHandler method that checks the error type for E_RECOVERABLE_ERROR and throws the exception (an ErrorException) if found.

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