3v4l.org

run code in 300+ PHP versions simultaneously
<?php $count = 0; $x = 0; $y = 1; echo $x."<br />"; echo $y."<br />"; while($count < 10) { $z = $x + $y; echo $z."<br />"; $x = $y; $y = $z; $count ++; }
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, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
0<br />1<br />1<br />2<br />3<br />5<br />8<br />13<br />21<br />34<br />55<br />89<br />
preferences:
276.06 ms | 406 KiB | 460 Q