3v4l.org

run code in 300+ PHP versions simultaneously
<?php $std1 = new stdclass(); $std1->id = 0; $std2 = new stdclass(); $std2->id = 1; $previous = array($std1); $new = array($std1, $std2); function compareThem($a, $b) { $diff = $a->id - $b->id; if ($diff < 0) { return -1; } if ($diff > 0) { return 1; } return 0; }
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 - 5.6.25, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.3.7

preferences:
263.51 ms | 406 KiB | 370 Q