3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 2; $y = 100; echo($y . '|' . $x - 1); echo("\n"); echo($y - 1 . '|' . $x);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
100|1 99|2
Output for 7.4.0 - 7.4.33
Deprecated: The behavior of unparenthesized expressions containing both '.' and '+'/'-' will change in PHP 8: '+'/'-' will take a higher precedence in /in/EAhoZ on line 4 Notice: A non well formed numeric value encountered in /in/EAhoZ on line 4 99 99|2
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 - 5.6.38, 7.0.0 - 7.0.33, 7.3.32 - 7.3.33
99 99|2
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31
Notice: A non well formed numeric value encountered in /in/EAhoZ on line 4 99 99|2
preferences:
152.11 ms | 410 KiB | 5 Q