3v4l.org

run code in 300+ PHP versions simultaneously
<?php $f = 1234567890123456789.0; $s = '1234567890123456789.0'; var_dump($f, $s, $f == $s);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
float(1.2345678901234568E+18) string(21) "1234567890123456789.0" bool(true)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
float(1.2345678901235E+18) string(21) "1234567890123456789.0" bool(true)
preferences:
296.58 ms | 404 KiB | 459 Q