[单选题]执行下面的代码后，输出结果为_____。 class test { public $data; } $x=new test(); $x->data=99; $y=$x; $y->data=9; echo $x->data;
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2023-11-01 15:20:54|
14
[单选题]执行下面的代码后，输出结果为_____。 class test { public $data; } $x=new test(); $x->data=99; $y=$x; $y->data=9; echo $x->data;
A.null
B.0
C.9
D.99
A.null
B.0
C.9
D.99
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