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<?php class Base { public static function describe() { static $description = null; if ($description === null) { $description = "I am a " . static::getName() . "\n"; } return $description; } } class Car extends Base { protected static function getName() { return 'car'; } } class Peugot extends Car { protected static function getName() { return 'peugot'; } public static function describe() { return 'Vroom! ' . parent::describe(); } } class Renault extends Car { protected static function getName() { return 'renault'; } } $car = new Car; $peugot = new Peugot; $renault = new Renault; echo $car::describe(); echo $peugot::describe(); echo $renault::describe();
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
I am a car Vroom! I am a car I am a car
Output for 5.3.0 - 5.3.29, 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
I am a car Vroom! I am a car I am a renault
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_STATIC in /in/UHdZ9 on line 9
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STATIC in /in/UHdZ9 on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/UHdZ9 on line 4
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
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/UHdZ9 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/UHdZ9 on line 4
Process exited with code 255.
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