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<?php class foo{ public static $myvar = 99; public function __construct(){ $this->myvar = 35; } public function printMyVar(){ echo '->printMyVar(): '.$this->myvar; } public function setMyVar($mv){ $this->myvar = $mv; } } echo 'foo::$myvar: '.foo::$myvar."\n"; $foo = new foo(); echo $foo->printMyVar(); echo "\n"; echo 'foo::$myvar: '.foo::$myvar."\n"; echo "Conclusion: when using \$this-> to change the value, it adds another non-static version rather than changing the static version";
Output for git.master, git.master_jit, rfc.property-hooks
foo::$myvar: 99 Notice: Accessing static property foo::$myvar as non static in /in/cFaPO on line 7 Deprecated: Creation of dynamic property foo::$myvar is deprecated in /in/cFaPO on line 7 Notice: Accessing static property foo::$myvar as non static in /in/cFaPO on line 10 ->printMyVar(): 35 foo::$myvar: 99 Conclusion: when using $this-> to change the value, it adds another non-static version rather than changing the static version

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