It actually will return FATAL ERROR or something like that since you didn't
echo'ed variables or string ;)
On Mon, Feb 2, 2009 at 3:03 PM, Edmund Hertle <edmund.hertle@xxxxxxxxxxxxxxx
> wrote:
> 2009/2/2 Gavin Hodge <gavin.hodge@xxxxxxxxx>
>
> > Hi,
> >
> > I'm fairly new to PHP, having migrated from the Java / C# world.
> >
> > I wrote some code similar to the following:
> >
> > $success = true;
> > $success &= operation1();
> > $success &= operation2();
> >
> > if ($success === true) {
> > operation3(); // depends on 1 and 2 being successful
> > }
> >
> > This didn't work as expected. After a bit of digging I found:
> > * The &= operation isn't mentioned anywhere in the PHP documentation
> > * The &= function seems to work as expected, however the following is
> > observed...
> > $success = true;
> > $success &= true;
> > print $success == true; // outputs 1
> > print $sucesss === true; // no output
> > * The 'or' assignment operator |= causes no errors but doesn't work.
> >
> > Can any PHP gurus explain why the &= operator works at all, and why
> > === seems to fail afterwards?
> >
> > Cheers,
> > Gavin.
>
>
> Hey,
>
> never heard of the "|=" operator. So I think php does not support it.
> I cannot say how "&=" works in Java or C# but as of php it works like that
> (IMO) (reference instead of copy):
> $var1 = "test1";
> $var2 = $var1;
> $var3 &= $var1;
> $var1 = "test2";
>
> echo var1; // "test2"
> echo var2; // "test1"
> echo var3; // "test2"
>
