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"
