Boolean Assignment Operator

[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.

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