3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1,2,3); list() = $a; list(,,) = $a; list($x, list(), $y) = $a; var_dump(get_defined_vars());
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.31, 7.3.0 - 7.3.18, 7.4.0 - 7.4.6
Fatal error: Cannot use empty list in /in/D53Bc on line 4
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
array(10) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/D53Bc" } ["argc"]=> int(1) ["_SERVER"]=> array(17) { ["TERM"]=> string(5) "xterm" ["PATH"]=> string(13) "/usr/bin:/bin" ["LANG"]=> string(1) "C" ["SHELL"]=> string(7) "/bin/sh" ["MAIL"]=> string(16) "/var/mail/nobody" ["LOGNAME"]=> string(6) "nobody" ["USER"]=> string(6) "nobody" ["HOME"]=> string(4) "/tmp" ["PHP_SELF"]=> string(9) "/in/D53Bc" ["SCRIPT_NAME"]=> string(9) "/in/D53Bc" ["SCRIPT_FILENAME"]=> string(9) "/in/D53Bc" ["PATH_TRANSLATED"]=> string(9) "/in/D53Bc" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1452009506.0001) ["REQUEST_TIME"]=> int(1452009506) ["argv"]=> array(1) { [0]=> string(9) "/in/D53Bc" } ["argc"]=> int(1) } ["a"]=> array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } ["y"]=> int(3) ["x"]=> int(1) }

preferences:
258.08 ms | 1402 KiB | 213 Q