Re: Re: variable_exists() patch

Timm Friebe wrote:

On Thu, 2003-08-14 at 13:18, nicos@php.net wrote: [...]

Hmm, I thought a variable is set even if its value is NULL?

Unfortunately it is not: thekid@friebes:~ > php -r '$a= NULL; var_dump(isset($a));' bool(false) - Timm exactly why isset() is either

1) a bad name for the function or 2) 'broken' Since the isset() documentation explicitly warns that it will return false if the value is set and is NULL, one could say that option 2 is invalid. So, in my opinion isset() is really a bad choice for a name of that functionality, and why something like variable_exists() is needed. Maybe it could just be called exists() ? I'm sure changing the functionality of isset() isn't really an option at this point for all of the existing apps that use it. Walt