note 126395 deleted from language.operators.comparison by salathe

Note Submitter: nullboi ---- Not mentioned in this document regarding the Null Coalescing Operator is that you can use is as an assigning operator (??=) and works nicely. <?php echo $test; // PHP Warning: Undefined variable $test echo $test ?? 'foo'; // prints 'foo' without error // $test remains undefined, echo $test still throw a PHP warning $test ??= 'bar'; // $test is undefined therefore equals NULL // no error, $test is now set to 'bar' echo $test ?? 'baz'; // $test is no longer undefined/NULL, prints 'bar' without error $test ??= 'baz'; // $test is no longer undefined/NULL, $test is not changed echo $test; // prints 'bar' ?>