Exception Handling-PHP manual notes

Exceptions generated in the PHP code can be throwStatement is thrown, and is catchStatement capture. Code that requires exception handling must be placed in the tryWithin the code block, each tryAt least one of the corresponding catch。 When an exception is thrown, the code behind the block of code will not proceed, and PHP will attempt to find the first one to match it. catch。 Of course, PHP allows you to catchThe code block is thrown in again throwAbnormal. If an exception is not captured and is not used set_exception_handler(), PHP will produce a serious error.

Here is an example of the use of exceptions.

  
   ';    echo inverse(0) . '
';} catch(Exception $e) {    echo 'Caught exception: ' . $e->getMessage() . '
';}echo 'hello';

There is also an example of an exception nesting.

  
   getMessage());        }    }}$foo = new Test;$foo->testing();

Users can use custom exception handling classes to extend PHP's built-in exception handling classes.

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