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<?php $strs = array('', 'test', new stdClass(), 1234, 'false', 'true', true, false, null); foreach ($strs as $str) { var_dump($str ?: null); var_dump(!empty($str) ? $str : null); }
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 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
NULL NULL string(4) "test" string(4) "test" object(stdClass)#1 (0) { } object(stdClass)#1 (0) { } int(1234) int(1234) string(5) "false" string(5) "false" string(4) "true" string(4) "true" bool(true) bool(true) NULL NULL NULL NULL
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/WZHoa on line 6
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/WZHoa on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/WZHoa on line 6
Process exited with code 255.

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