while we're at it (PHP-5.1 & instanceof) View as Markdown

Will look into it.

At 11:15 PM 6/15/2005 +0200, Michael Wallner wrote:

I already complained about that issue several times on IRC
and now that it's time for PHP-5.1 to come, I'll just throw
this question/rant in...

Using is_a() throws a notice (E_STRICT IIRC) in PHP5, which
should be fine, because it was deprecated in favour of the
instanceof operator. But there's quite an ugly problem with
the instnceof operator - it needs the class to be checked
already loaded, while is_a() didn't -- and instanceof
let the script die if there's no such class.

To replace
is_a($obj, 'ClassName')
calls one would need to write
class_exists('ClassName') && ($obj instanceof ClassName)

The point is, that I don't see the point why is_a() has been
deprecated (and replaced) by an operator that doesn't provide
the same functionality and can even be harmful (with fatal errors).

Regards,
Mike

http://www.akbkhome.com/blog.php/View/75/removing+that+stupid+is_a
+warning..html

You're not the only one ;)

Regards
Alan

I already complained about that issue several times on IRC
and now that it's time for PHP-5.1 to come, I'll just throw
this question/rant in...

Using is_a() throws a notice (E_STRICT IIRC) in PHP5, which
should be fine, because it was deprecated in favour of the
instanceof operator. But there's quite an ugly problem with
the instnceof operator - it needs the class to be checked
already loaded, while is_a() didn't -- and instanceof
let the script die if there's no such class.

To replace
is_a($obj, 'ClassName')
calls one would need to write
class_exists('ClassName') && ($obj instanceof ClassName)

The point is, that I don't see the point why is_a() has been
deprecated (and replaced) by an operator that doesn't provide
the same functionality and can even be harmful (with fatal errors).

Regards,
Mike

Seems to work...

At 11:15 PM 6/15/2005 +0200, Michael Wallner wrote:

I already complained about that issue several times on IRC
and now that it's time for PHP-5.1 to come, I'll just throw
this question/rant in...

Using is_a() throws a notice (E_STRICT IIRC) in PHP5, which
should be fine, because it was deprecated in favour of the
instanceof operator. But there's quite an ugly problem with
the instnceof operator - it needs the class to be checked
already loaded, while is_a() didn't -- and instanceof
let the script die if there's no such class.

To replace
is_a($obj, 'ClassName')
calls one would need to write
class_exists('ClassName') && ($obj instanceof ClassName)

The point is, that I don't see the point why is_a() has been
deprecated (and replaced) by an operator that doesn't provide
the same functionality and can even be harmful (with fatal errors).

Regards,
Mike