3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump( json_decode( "null" ) ); var_dump( json_decode( "false" ) ); var_dump( json_decode( "true" ) );
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
NULL bool(false) bool(true)
preferences:
123.39 ms | 402 KiB | 121 Q