On 21 July 2010 16:10, Christoph Boget <[email protected]> wrote:
> Ok, so taking the sample code that is on the page
>
> http://us3.php.net/manual/en/language.exceptions.extending.php
>
> Literally, just cutting and pasting the code. When I try to
>
> throw new Exception( 'My Message' );
>
> PHP spits out the following fatal error:
>
> Fatal error: Wrong parameters for Exception([string $exception [, long $code
> ]])
>
> and the line number it dies on is the line in the
> MyException::__construct() where it is calling the parent's
> constructor. So what's going on? Is the documentation wrong? Is
> this a bug? Am I doing something wrong?
>
> I'm using PHP 5.2.9.
>
> thnx,
> Christoph
>
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>
As of V5.3.0, exceptions can be nested [1].
The example code will generate the following errors.
V5.0.x : Fatal error: Argument 3 must not be null
V5.1.0 - V5.1.1 : Fatal error: Wrong parameter count for
exception([string $exception [, long $code ]])
V5.1.1 - V5.2.x : Fatal error: Wrong parameters for Exception([string
$exception [, long $code ]])
The nesting is controlled by the 3rd parameter to the constructor.
Removing this will allow the code to work on your version.
<?php
class MyException extends Exception
{
// Redefine the exception so message isn't optional
public function __construct($message, $code = 0) {
// some code
// make sure everything is assigned properly
parent::__construct($message, $code);
}
// custom string representation of object
public function __toString() {
return __CLASS__ . ": [{$this->code}]: {$this->message}\n";
}
public function customFunction() {
echo "A custom function for this type of exception\n";
}
}
?>
Regards,
Richard Quadling.
[1] http://us3.php.net/manual/en/migration53.new-features.php
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