PHP5 introduced exceptions, a special class that can be thrown and caught (as opposed to errors which are raised) indicating an unexpected event. Unlike errors, exceptions are designed to be handled by the calling code and will bubble up the execution chain until they are caught. Code in the current scope will stop executing as soon as an exception is thrown (so any lines after a throw statement won’t be executed) and control is handed back to the first matching exception handler (either a catch block, configured exception handler, or language-provided exception handler). Only when an exception is caught will code execution continue from there…
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