3v4l.org

run code in 300+ PHP versions simultaneously
<?php $plik = file('linki.txt'); unset($plik[3]); // nr linu do skasowania $f = fopen('linki.txt', 'w'); foreach($plik as $linia){ fputs($f, $linia); } fclose($f); ?>

preferences:
41.42 ms | 402 KiB | 5 Q