Re: Exception::__toString() not called

From: Date: Wed, 17 Mar 2004 09:04:40 +0000
Subject: Re: Exception::__toString() not called
References: 1 2 3 4  Groups: php.internals 
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At 09:49 AM 3/17/2004 +0100, Marcus Boerger wrote:
Hello Andi, the problem is that we have many classes that the handler table to behave mostly like a default php object. We'd need to manually set the cast handler for all of them.
Yes, that is correct. Don't forget that cast_object() can not call user-defined __toString(). If you have a better way then let me know but I don't want to do some hack just because other objects are copying the stdclass'es handlers (which they shouldn't really do in the first place or at least, I don't have a contract with internal classes about it). Andi
marcus Wednesday, March 17, 2004, 9:45:26 AM, you wrote: The Exception class should support cast_object(). I don't see why we need to add extra flags. Andi At 11:45 PM 3/16/2004 +0100, Marcus Boerger wrote:
Hello Timm, hello Andi, i htought i had a better solution to the __toString() problem. But then i found out why we made it so complex. The reason IIRC was to prevent __toString() being called everywhere automatically when it is a user function. Havin said this the solution is very easy. We expand the signature of cast_object to inform about exactly this - whether user space functions may be called or not. From _convert_to_string() we set that param to zero and from make_printable_zval we set it to 1 and inside the cast function we only need to verify the type of the function if necessary. Even better would be to add a flag that disallows usercode functions. Because with such a flag we do not have a problem if a conversion calls an internal method which then calls a userspace function which it shouldn't. Anid? Tuesday, March 16, 2004, 10:22:24 PM, you wrote:
Hi,
Both of the following examples used to output the Exception::__toString() output, which they don't anymore:
$ php-dev -r '$e= new Exception(); echo $e, "\n";' Object id #1
$ php-dev -r '$e= new Exception(); echo (string)$e, "\n";' Object id #1
Works fine for userland objects:
$ php-dev -r 'class Foo { function __toString() { return "foo"; }} echo new Foo(), "\n";' foo
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