3v4l.org

run code in 300+ PHP versions simultaneously
<?php $lines = file('mytextfile.txt'); $lines = array_slice($lines, 100); $i = 0; foreach($lines as $line) { if(str_contains($line, $keyword)) { echo $line; $i++; if ($i >= 20) { break; } } }

preferences:
36.8 ms | 406 KiB | 5 Q