3v4l.org

run code in 300+ PHP versions simultaneously
<?php function swap($g, $k) { $temp = $g; $g = $k; $k = $temp; } if($g>$k) swap($g, $k); for($i=$g; $i<=$k; $i++) { echo $i."<br>"; } ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined variable $k in /in/ZkNIA on line 10 Warning: Undefined variable $g in /in/ZkNIA on line 10 Warning: Undefined variable $g in /in/ZkNIA on line 11 Warning: Undefined variable $k in /in/ZkNIA on line 11 <br> Warning: Undefined variable $k in /in/ZkNIA on line 11
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: k in /in/ZkNIA on line 10 Notice: Undefined variable: g in /in/ZkNIA on line 10 Notice: Undefined variable: g in /in/ZkNIA on line 11 Notice: Undefined variable: k in /in/ZkNIA on line 11 <br> Notice: Undefined variable: k in /in/ZkNIA on line 11
Output for 7.3.32 - 7.3.33
<br>
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Notice: Undefined variable: g in /in/ZkNIA on line 10 Notice: Undefined variable: k in /in/ZkNIA on line 10 Notice: Undefined variable: g in /in/ZkNIA on line 11 Notice: Undefined variable: k in /in/ZkNIA on line 11 <br> Notice: Undefined variable: k in /in/ZkNIA on line 11

preferences:
229.11 ms | 402 KiB | 322 Q