3v4l.org

run code in 300+ PHP versions simultaneously
<?php $amt = 0; $sw = 0; if($sw=='B'){ print("sw=$sw<br>"); print("<font color=maroon>Buy $amt <font color=red>$sw<br>"); } else { print('$sw is not B'); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
$sw is not B
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 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
sw=0<br><font color=maroon>Buy 0 <font color=red>0<br>
preferences:
263.62 ms | 406 KiB | 470 Q