3v4l.org

run code in 300+ PHP versions simultaneously
<?php $content = 'Sentence number one. Sentence number two. Sentence number 3. Sentence number 4. Sentence number 5.'; $last = strrpos($content, '. '); $parts = str_split($content, strrpos($content, '. ', $last - strlen($content))+2); echo 'First part: ', $parts[0], PHP_EOL, 'Second part: ', $parts[1];

preferences:
168.11 ms | 405 KiB | 5 Q