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<?php //this seems to work as if there is 2 variables both a protected static and a protected non-static class foo { protected static $myvar = 999; //Uncommenting below leads to a Cannot redeclare foo::$myvar //public $myvar = 77; //Normal non-static Instance Functions public function __construct(){} public function instancePrintVar(){ echo __FUNCTION__.' '.$this->myvar; } public function instanceSetVar($v){ $this->myvar = $v; } //Static functions public static function staticPrintVar(){ echo __FUNCTION__.' '.self::$myvar; } public static function staticSetVar($v){ self::$myvar = $v; } } function nl(){ echo "\n"; } foo::staticPrintVar(); nl(); $foo = new foo(); $foo->instanceSetVar(3); $foo->instancePrintVar(); nl(); foo::staticPrintVar(); nl(); $foo::staticPrintVar(); nl(); foo::staticSetVar(888); foo::staticPrintVar(); $foo->instancePrintVar(); echo "Conclusion: when using \$this-> to change the value, it adds another non-static version rather than changing the static version";
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
staticPrintVar 999 Notice: Accessing static property foo::$myvar as non static in /in/4KuhD on line 17 Deprecated: Creation of dynamic property foo::$myvar is deprecated in /in/4KuhD on line 17 Notice: Accessing static property foo::$myvar as non static in /in/4KuhD on line 14 instancePrintVar 3 staticPrintVar 999 staticPrintVar 999 staticPrintVar 888 Notice: Accessing static property foo::$myvar as non static in /in/4KuhD on line 14 instancePrintVar 3Conclusion: when using $this-> to change the value, it adds another non-static version rather than changing the static version
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
staticPrintVar 999 Notice: Accessing static property foo::$myvar as non static in /in/4KuhD on line 17 Notice: Accessing static property foo::$myvar as non static in /in/4KuhD on line 14 instancePrintVar 3 staticPrintVar 999 staticPrintVar 999 staticPrintVar 888 Notice: Accessing static property foo::$myvar as non static in /in/4KuhD on line 14 instancePrintVar 3Conclusion: when using $this-> to change the value, it adds another non-static version rather than changing the static version
Output for 7.3.32 - 7.3.33
staticPrintVar 999 instancePrintVar 3 staticPrintVar 999 staticPrintVar 999 staticPrintVar 888instancePrintVar 3Conclusion: when using $this-> to change the value, it adds another non-static version rather than changing the static version
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
staticPrintVar 999 Strict Standards: Accessing static property foo::$myvar as non static in /in/4KuhD on line 17 Strict Standards: Accessing static property foo::$myvar as non static in /in/4KuhD on line 14 instancePrintVar 3 staticPrintVar 999 staticPrintVar 999 staticPrintVar 888instancePrintVar 3Conclusion: when using $this-> to change the value, it adds another non-static version rather than changing the static version
Output for 5.3.0 - 5.3.29
staticPrintVar 999 Strict Standards: Accessing static property foo::$myvar as non static in /in/4KuhD on line 17 Strict Standards: Accessing static property foo::$myvar as non static in /in/4KuhD on line 14 instancePrintVar 3 staticPrintVar 999 staticPrintVar 999 staticPrintVar 888 Strict Standards: Accessing static property foo::$myvar as non static in /in/4KuhD on line 14 instancePrintVar 3Conclusion: when using $this-> to change the value, it adds another non-static version rather than changing the static version
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /in/4KuhD on line 42
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /in/4KuhD on line 42
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/4KuhD 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/4KuhD 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/4KuhD on line 4
Process exited with code 255.
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