doWhile.condNotBoolean

This error is reported by phpstan/phpstan-strict-rules.

Code example

<?php declare(strict_types = 1);

$count = 5;

do {
    $count--;
} while ($count);

Why is it reported?

The phpstan-strict-rules package enforces that conditions in do-while loops must be strictly boolean. Using a non-boolean value such as an integer or string relies on PHP's implicit truthiness rules, which can lead to subtle bugs.

How to fix it

Use an explicit boolean comparison in the condition:

 <?php declare(strict_types = 1);

 $count = 5;

 do {
     $count--;
-} while ($count);
+} while ($count > 0);