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run code in 300+ PHP versions simultaneously
<?php namespace Foo; define('Foo\\null', true, true); define('Foo\\false', true, true); define("Foo\\NAN", 1337, true); echo 'null:';if (null) echo "TRUE";else echo "FALSE"; echo "\nfalse:";if (false) echo "TRUE";else echo "FALSE"; echo "\ntrue:";if (true) echo "TRUE";else echo "FALSE"; $n=acos(1.01); echo "\nNAN:".$n;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: define(): Argument #3 ($case_insensitive) is ignored since declaration of case-insensitive constants is no longer supported in /in/UbigU on line 3 Warning: define(): Argument #3 ($case_insensitive) is ignored since declaration of case-insensitive constants is no longer supported in /in/UbigU on line 4 Warning: define(): Argument #3 ($case_insensitive) is ignored since declaration of case-insensitive constants is no longer supported in /in/UbigU on line 5 null:FALSE false:FALSE true:TRUE NAN:NAN
Output for 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Deprecated: define(): Declaration of case-insensitive constants is deprecated in /in/UbigU on line 3 Deprecated: define(): Declaration of case-insensitive constants is deprecated in /in/UbigU on line 4 Deprecated: define(): Declaration of case-insensitive constants is deprecated in /in/UbigU on line 5 null:FALSE false:FALSE true:TRUE NAN:NAN
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.32 - 7.3.33, 7.4.26
null:FALSE false:FALSE true:TRUE NAN:NAN
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
null:TRUE false:TRUE true:TRUE NAN:NAN
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_STRING in /in/UbigU on line 2
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 T_STRING in /in/UbigU on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/UbigU on line 2
Process exited with code 255.

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