Constructor for PHP's exception has third parameter, documentation says:
$previous: The previous exception used for the exception chaining.
But I can't make it work. My code looks like this:
try
{
throw new Exception('Exception 1', 1001);
}
catch (Exception $ex)
{
开发者_运维问答 throw new Exception('Exception 2', 1002, $ex);
}
I expect Exception 2 to be thrown and I expect that it will have Exception 1 attached. But all I get is:
Fatal error: Wrong parameters for Exception([string $exception [, long $code ]]) in ...
What am I doing wrong?
The third parameter requires version 5.3.0.
Before 5.3 you can just create your own custom exception class. It is also recommended to do this, I mean if I catch (Exception $e)
then my code must handle all exceptions rather then just the one I'm wanting, code explains it better.
class MyException extends Exception
{
protected $PreviousException;
public function __construct( $message, $code = null, $previousException = null )
{
parent::__construct( $message, $code );
$this->PreviousException = $previousException;
}
}
class IOException extends MyException { }
try
{
$fh = @fopen("bash.txt", "w");
if ( $fh === false)
throw new IOException('File open failed for file `bash.txt`');
}
catch (IOException $e)
{
// Only responsible for I/O related errors
}
I get:
Uncaught exception 'Exception' with message 'Exception 1' ...
Next exception 'Exception' with message 'Exception 2' in ...
You using php > 5.3 ?
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