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<?php trait foo { static $bar = []; public static function a() { static::$bar = ["foo"]; echo "Goodbye Moon"; } } class bing { use foo; public static function a() { foo::a(); var_dump(self::$bar, foo::$bar); } public static function b() { foo::a(); self::$bar[] = "bat"; var_dump(self::$bar, foo::$bar); } } bing::a(); bing::b();
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Deprecated: Calling static trait method foo::a is deprecated, it should only be called on a class using the trait in /in/UZ6gq on line 16 Deprecated: Accessing static trait property foo::$bar is deprecated, it should only be accessed on a class using the trait in /in/UZ6gq on line 6 Goodbye Moon Deprecated: Accessing static trait property foo::$bar is deprecated, it should only be accessed on a class using the trait in /in/UZ6gq on line 17 array(0) { } array(1) { [0]=> string(3) "foo" } Deprecated: Calling static trait method foo::a is deprecated, it should only be called on a class using the trait in /in/UZ6gq on line 21 Deprecated: Accessing static trait property foo::$bar is deprecated, it should only be accessed on a class using the trait in /in/UZ6gq on line 6 Goodbye Moon Deprecated: Accessing static trait property foo::$bar is deprecated, it should only be accessed on a class using the trait in /in/UZ6gq on line 23 array(1) { [0]=> string(3) "bat" } array(1) { [0]=> string(3) "foo" }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 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
Goodbye Moonarray(0) { } array(1) { [0]=> string(3) "foo" } Goodbye Moonarray(1) { [0]=> string(3) "bat" } array(1) { [0]=> string(3) "foo" }
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/UZ6gq on line 2
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/UZ6gq on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/UZ6gq on line 2
Process exited with code 255.
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