Re: Re: PHP 4.0 Bug #7478 Updated: empty() function does not work as expected

joey wrote: > Here's what the manual has to say: > Returns false if var is set and has a non-empty or non-zero > value; true otherwise. > The only bug here is in your idea of what empty() means. Well, that was obvious in the first place ;-) PHP takes the Perl concept of assuming that after $var = "0" the variable is empty. In this context, empty() has no benefit, because it's functionality can be achived just by using "if ( !$var )". I showed a way of giving empty() an improved functionality that would provide PHP programmers with an easy way to determine an empty string (instead of a "string who's value is FALSE"). Well, thank you for your immediate feedback on this problem. Heiner On Thu, 26 Oct 2000, Heiner Steven wrote the following to joey@joeysmith.com : > On Thu, 26 Oct 2000, Heiner Steven wrote the following to php-dev@lists.php...: > > > The basic fact is, that I would like to be able > > to get three kind of information for a variable: > > > > 1. Does a variable exist? -> isset() > > 2. Is the variable empty? -> empty () > > 3. Has the variable's content a truth value? -> ($var) > > > > The second case does not work as expected. > > > > > Can you give an example of somethat that is true for 1 & 3 but > > not 2? > > That misses the point: 2 and 3 have identical results, but > > empty ("0") > > just should not be TRUE: the string "0" is not empty. It contains exactly > one character: '0' or ASCII 48. > > I would expect to find > > empty ("") > > to be true. > > > Heiner ----- End Included Message -----