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<?php $_GET['value'] = true; $x = $_GET['value'] ?? false ?: 'Default'; var_dump($x); $_GET['value'] = false; $x = $_GET['value'] ?? false ?: 'Default'; var_dump($x);
based on hAirK
Output for 7.0.0 - 7.2.0
bool(true) string(7) "Default"
Output for 5.3.20 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/tlXO1 on line 3
Process exited with code 255.