3v4l.org

run code in 300+ PHP versions simultaneously
<?php $n=100; // i want {100} printed out print "{$n}\n"; // oh right, let's escape it then print "\{$n}\n";
Output for 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
100 \{100}
Output for 5.1.0
100 {$n}
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5
100 {100}
preferences:
312.02 ms | 402 KiB | 466 Q