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30 lines
668 B
30 lines
668 B
<?php
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//使用 final 修饰的类，不能被继承；
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final class plant
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{
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public $tall;
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}
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class tree extends plant //应该会报错 Class tree may not inherit from final class (plant)
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{
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public $color;
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}
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//类中使用 final 修饰的成员方法，在子类中不能覆盖（重写）该方法。
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class animal
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{
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final public function eat(){
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echo "animal eat".'<br>';
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}
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}
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class dog extends animal
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{
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public function eat() //应该会报错 Cannot override final method animal::eat()
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{
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echo "dog eat bone".'<br>';
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}
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}
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?>
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