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<?php trait A { protected static $_a; public static function setA($a) { static::$_a = $a; } public static function getA() { return static::$_a; } } A::setA('AAAA'); class B { use A; public function __construct() { var_dump(static::$_a); } } A::setA('AAAA'); new B(); B::setA('BBBB'); new B(); echo A::getA(); echo B::getA();
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Calling static trait method A::setA is deprecated, it should only be called on a class using the trait in /in/tG3Ip on line 17 Deprecated: Accessing static trait property A::$_a is deprecated, it should only be accessed on a class using the trait in /in/tG3Ip on line 8 Deprecated: Calling static trait method A::setA is deprecated, it should only be called on a class using the trait in /in/tG3Ip on line 29 Deprecated: Accessing static trait property A::$_a is deprecated, it should only be accessed on a class using the trait in /in/tG3Ip on line 8 NULL string(4) "BBBB" Deprecated: Calling static trait method A::getA is deprecated, it should only be called on a class using the trait in /in/tG3Ip on line 37 Deprecated: Accessing static trait property A::$_a is deprecated, it should only be accessed on a class using the trait in /in/tG3Ip on line 13 AAAABBBB
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.29 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
string(4) "AAAA" string(4) "BBBB" AAAABBBB
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/tG3Ip 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 T_STRING in /in/tG3Ip on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/tG3Ip on line 3
Process exited with code 255.
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184.63 ms | 401 KiB | 312 Q