PHP 5: if (\\false)
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:category:  PHP
:date:      2022-01-07 23:07:00 +0200
:tags:      php 5, til

I was wondering why the typical class alias boilerplate code uses this weird backslash in
``if (\false)`` like here__ for example.

.. __: https://github.com/twigphp/Twig/blob/v2.7.0/lib/Twig/Function.php

It turns out this code `will wish you a happy debugging in PHP 5.3-5.6`__:

.. __: https://3v4l.org/eW70X

.. code-block:: php

    <?php

    namespace ns;

    define('ns\\false', 1);

    if (false) {
        echo "Happy Debugging", PHP_EOL;
    }

Not a very useful knowledge now but an interesting history fact.