3v4l.org

run code in 300+ PHP versions simultaneously
<?php $v = [false]; foreach($v as $t): echo PHP_EOL; echo PHP_EOL; list($t1, $t2, $t3, $t4) = [$t, $t, $t, $t]; var_dump(gettype($t) . ':' . var_export($t, true)); var_dump('-$t', -$t); var_dump('+$t', +$t); var_dump('!$t', !$t); //var_dump('~$t', ~$t); var_dump('$t++', $t1++); var_dump('$t--', $t2--); var_dump('--$t', --$t3); var_dump('++$t', ++$t4); endforeach;
Output for 8.3.0 - 8.3.6
string(13) "boolean:false" string(3) "-$t" int(0) string(3) "+$t" int(0) string(3) "!$t" bool(true) Warning: Increment on type bool has no effect, this will change in the next major version of PHP in /in/nJuFb on line 15 string(4) "$t++" bool(false) Warning: Decrement on type bool has no effect, this will change in the next major version of PHP in /in/nJuFb on line 16 string(4) "$t--" bool(false) Warning: Decrement on type bool has no effect, this will change in the next major version of PHP in /in/nJuFb on line 17 string(4) "--$t" bool(false) Warning: Increment on type bool has no effect, this will change in the next major version of PHP in /in/nJuFb on line 18 string(4) "++$t" bool(false)
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 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
string(13) "boolean:false" string(3) "-$t" int(0) string(3) "+$t" int(0) string(3) "!$t" bool(true) string(4) "$t++" bool(false) string(4) "$t--" bool(false) string(4) "--$t" bool(false) string(4) "++$t" bool(false)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/nJuFb on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/nJuFb on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/nJuFb on line 3
Process exited with code 255.

preferences:
251.1 ms | 401 KiB | 343 Q