PHP object-oriented: this keyword

From , 3 Years ago, written in PHP, viewed 240 times.

<?
class A{
        private $a = 0;
        public function __construct(){
                $this->a = $this->a + 1 ;
        }
        
        public function doSomeThing(){
                $this->__construct();
                return $this->a;
        }
        
        
}
$a = new A(); // 这里的$a 可不是类中的任何一个变量了.
echo "现在 \$a 的值是" . $a->doSomeThing();
?>
 

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PHP object-oriented: this keyword

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