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<?php namespace { define('true', 1!==1); define('false', 1===1); var_dump(array( 'true' => true, 'false' => false, '1===1' => 1===1, '1!==1' => 1!==1, )); } namespace Foo { var_dump(array( 'true' => true, 'false' => false, '1===1' => 1===1, '1!==1' => 1!==1, )); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Constant true already defined in /in/ko4kK on line 4 Warning: Constant false already defined in /in/ko4kK on line 5 array(4) { ["true"]=> bool(true) ["false"]=> bool(false) ["1===1"]=> bool(true) ["1!==1"]=> bool(false) } array(4) { ["true"]=> bool(true) ["false"]=> bool(false) ["1===1"]=> bool(true) ["1!==1"]=> bool(false) }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Constant true already defined in /in/ko4kK on line 4 Notice: Constant false already defined in /in/ko4kK on line 5 array(4) { ["true"]=> bool(true) ["false"]=> bool(false) ["1===1"]=> bool(true) ["1!==1"]=> bool(false) } array(4) { ["true"]=> bool(true) ["false"]=> bool(false) ["1===1"]=> bool(true) ["1!==1"]=> bool(false) }
Output for 7.3.32 - 7.3.33, 7.4.26
array(4) { ["true"]=> bool(true) ["false"]=> bool(false) ["1===1"]=> bool(true) ["1!==1"]=> bool(false) } array(4) { ["true"]=> bool(true) ["false"]=> bool(false) ["1===1"]=> bool(true) ["1!==1"]=> bool(false) }
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 '{' in /in/ko4kK 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/ko4kK on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/ko4kK on line 3
Process exited with code 255.
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