PHP exception handling technology, top exception handler, PHP exception handling _php Tutorial

Source: Internet
Author: User
Tags php exception handling

PHP exception handling technology, top exception handler, PHP exception handling

PHP handles exceptions like Java, with Try{}catch () {}

The function used to define the top-level exception handler is Set_exception_handler("My_exception"); here My_expection is a developer's custom exception handler, which is a top-level exception processor, and only the top-level exception handler can handle exceptions if there are no functions in the program to handle exceptions, and if the top-level exception handler is not defined, Exceptions are handled by the system's default exception handler for example:
  PHP    set_exception_handler("my_expection");     function my_expection () {        echo "Here is the top exception handler"    ;    } Try {        Nohello ("Hello");    } Catch  (Exception$e) {        throw$e;    }  function Nohello ($nohello) {         if($nohello = = " Hello ") {          thrownewException(" Cannot enter Hello ");    }   Else {            echo "input succeeded";        }    }? >

Reprinted from: true techarticle PHP Exception handling technology, top-level exception handler, PHP exception handling PHP for exception handling as in Java, the use of Try{}catch () {} defines the top-level exception handler used by the function is SET_EX ...

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