3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo ' ' . json_encode('1.123456789123456789', JSON_NUMERIC_CHECK) . PHP_EOL; echo json_encode(round('1.123456789123456789', 14));
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
1.1234567891234568 1.12345678912346
Output for 7.0.0 - 7.0.20
1.1234567891235 1.1234567891235

preferences:
159.92 ms | 401 KiB | 212 Q