3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i = 10; $i >= 0; --$i){ if ($i == ($i < 1)){ $msg = 'really'; }else if ($i == ($i < 3)) { $msg = 'quite bad'; }else if ($i == ($i < 5)) { $msg = 'pay attention'; }else if ($i == ($i <= 9)){ $msg = 'quite good'; }else if ($i == ($i <= 10)){ $msg = 'congrat'; }else{ $msg = 'Oops'; } echo $i.' '.$msg . "\n"; }
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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 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
10 congrat 9 quite good 8 quite good 7 quite good 6 quite good 5 quite good 4 pay attention 3 pay attention 2 quite bad 1 quite bad 0 Oops
preferences:
247.49 ms | 406 KiB | 343 Q