Solved.
empty, isset and unset are not functions, they are language contructs,
which results in the error. This makes sense, a workaround is creating
functions like isEmpty (or something similar) and using them. I'll be
submitting a future request soon ;)
Thanks everyone, especially OpenSrc in #php
regards,
Philip
<snip>
> > <?php
> >
> > // works
> > if (empty($var)) print '$var is empty<br>';
> >
> > // works
> > $foo = 'is_string';
> > $var = 'abcdef';
> > if ($foo($var)) print '$var is a string<br>';
> >
> > // works
> > $foo = 'strlen';
> > $var = 'abcdef';
> > if ($foo($var) > 5) print '$var is over 5 chars<br>';
> >
> > // doesn't work : Fatal Error : Call to undefined function: empty()
> > // same with isset() and unset()
> > $foo = 'empty';
> > if ($foo($var)) print '$var is empty';
> >
> > ?>
> >
> > In otherwords, only these few functions aren't working as "variable
> > functions" but result in a "Fatal Error" instead. Why?
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