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Bugs & Features
<?php //this seems to work as if there is 2 variables both a public static and a private static class foo{ public static $myvar = 99; //Uncommenting below leads to a Cannot redeclare foo::$myvar //public $myvar = 77; public function __construct(){ $this->myvar = 35; } public function printMyVar(){ echo '->printMyVar(): '.$this->myvar; } public function setMyVar($mv){ $this->myvar = $mv; } } echo "foo before creation: \n"; echo 'static: foo::$myvar'.foo::$myvar."\n"; echo "Creating new instance of foo\n"; $foo = new foo(); echo 'instance: '.$foo->printMyVar(); echo "\n"; echo 'static foo::$myvar: '.foo::$myvar."\n"; $foo->setMyVar(33); echo "After setting $myvar to 33\n"; echo 'instance: '.$foo->printMyVar(); echo "\n"; echo 'static foo::$myvar: '.foo::$myvar."\n"; echo "Conclusion: when using \$this-> to change the value, it adds another non-static version rather than changing the static version";
Output for 7.0.0 - 7.1.0
foo before creation: static: foo::$myvar99 Creating new instance of foo Notice: Accessing static property foo::$myvar as non static in /in/lIZdc on line 10 Notice: Accessing static property foo::$myvar as non static in /in/lIZdc on line 13 ->printMyVar(): 35instance: static foo::$myvar: 99 Notice: Accessing static property foo::$myvar as non static in /in/lIZdc on line 15 Notice: Undefined variable: myvar in /in/lIZdc on line 31 After setting to 33 Notice: Accessing static property foo::$myvar as non static in /in/lIZdc on line 13 ->printMyVar(): 33instance: static foo::$myvar: 99 Conclusion: when using $this-> to change the value, it adds another non-static version rather than changing the static version
Output for 5.4.0 - 5.6.25
foo before creation: static: foo::$myvar99 Creating new instance of foo Strict Standards: Accessing static property foo::$myvar as non static in /in/lIZdc on line 10 Strict Standards: Accessing static property foo::$myvar as non static in /in/lIZdc on line 13 ->printMyVar(): 35instance: static foo::$myvar: 99 Strict Standards: Accessing static property foo::$myvar as non static in /in/lIZdc on line 15 Notice: Undefined variable: myvar in /in/lIZdc on line 31 After setting to 33 ->printMyVar(): 33instance: static foo::$myvar: 99 Conclusion: when using $this-> to change the value, it adds another non-static version rather than changing the static version
Output for 5.0.5 - 5.3.29
foo before creation: static: foo::$myvar99 Creating new instance of foo Strict Standards: Accessing static property foo::$myvar as non static in /in/lIZdc on line 10 Strict Standards: Accessing static property foo::$myvar as non static in /in/lIZdc on line 13 ->printMyVar(): 35instance: static foo::$myvar: 99 Strict Standards: Accessing static property foo::$myvar as non static in /in/lIZdc on line 15 Notice: Undefined variable: myvar in /in/lIZdc on line 31 After setting to 33 Strict Standards: Accessing static property foo::$myvar as non static in /in/lIZdc on line 13 ->printMyVar(): 33instance: static foo::$myvar: 99 Conclusion: when using $this-> to change the value, it adds another non-static version rather than changing the static version
Output for 5.0.4
foo before creation: static: foo::$myvar99 Creating new instance of foo ->printMyVar(): 35instance: static foo::$myvar: 99 Notice: Undefined variable: myvar in /in/lIZdc on line 31 After setting to 33 ->printMyVar(): 33instance: static foo::$myvar: 99 Conclusion: when using $this-> to change the value, it adds another non-static version rather than changing the static version
Output for 5.0.0 - 5.0.3
foo before creation: static: foo::$myvar99 Creating new instance of foo ->printMyVar(): 35instance: static foo::$myvar: 99 Notice: Undefined variable: myvar in /in/lIZdc on line 31 After setting to 33 ->printMyVar(): 33instance: static foo::$myvar: 99 Conclusion: when using $this-> to change the value, it adds another non-static version rather than changing the static version
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/lIZdc on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/lIZdc 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/lIZdc on line 4
Process exited with code 255.