Exception Handling - PHP Manual Notes

Exceptions generated in PHP code can be thrown by thethrowstatement and captured by thecatchstatement. Code that requires exception handling must be placed within thetrycode block, and eachtrymust have at least one correspondingcatch. When an exception is thrown, the code following the code block will not continue to execute. At this time, PHP will try to find the first matchingcatch. Of course, PHP allowsthrowexceptions to be thrown again within acatchcode block. If an exception is not caught and handled accordingly usingset_exception_handler(), PHP will generate a fatal error.

Here is an example of exception usage.

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

There is also an example of exception nesting.

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

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

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