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@ 2020-10-23T20:10:10Z

<?php
const DIR_PATH_LINUX   = '/opt/myprogram/';
const DIR_PATH_WINDOWS = 'C:\xampp\htdocs\\parspack\\storage\\myprogram\\';

$os = 'windows';

echo constant("DIR_PATH_".strtoupper($os));

Output
Performance
VLD
References
Branches

strtoupper: documentation ( source)
constant: documentation ( source)

preferences:dark modelive preview

57.06 ms | 402 KiB | 5 Q