3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = 'bar'; var_dump("\{$foo}");
Output for 7.4.0 - 7.4.30, 8.0.1 - 8.0.22, 8.1.0 - 8.1.9
string(6) "\{bar}"

preferences:
46.35 ms | 409 KiB | 5 Q