一直提示運行成功，輸出錯誤
<?php
class?Car?{
????public?$speed?=?0;
????//增加speedUp方法，使speed加10
????public?function?speedUp(){
????????$this->speed?+=10;
????}
}
$car?=?new?Car();
$car->speedUp();
echo?$car->speed;
小碗小姐的勺子先森
2017-09-14
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2017-10-04
我也是，好多題都這樣，迷醉
2017-09-14
<?php
class?Car?{
????public?$speed?=?0;
????//增加speedUp方法，使speed加10
????public?function?speedUp(){
????????$this->speed?+=10;
????}
}
$car?=?new?Car();
$car->speedUp();
echo?$car->speed;
?>