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@ 2024-03-12T08:59:17Z

<?php

function dvach(): void
{
    if (false === function_exists('sosach')) {
        function sosach(): void
        {
            if (false === function_exists('mailach')) {
                function mailach(): void
                {
                    echo __FUNCTION__ . PHP_EOL;
                }
            }

            echo __FUNCTION__ . PHP_EOL;
        }
    }

    echo __FUNCTION__ . PHP_EOL;
}

dvach();
sosach();
mailach();

Output
Performance
VLD
References
Branches

function_exists: documentation ( source)

preferences:dark modelive previewkey bindings

41.03 ms | 975 KiB | 5 Q