3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = 'test'; var_dump("$foo"); var_dump("{$foo}"); var_dump("${foo}");
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /in/vMO2D on line 6 string(4) "test" string(4) "test" string(4) "test"
Output for 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
string(4) "test" string(4) "test" string(4) "test"
preferences:
212.77 ms | 403 KiB | 340 Q