一、自訂函數
<span>function</span> add(<span>$a</span>,<span>$b</span><span>){
</span><span>$c</span>=<span>$a</span>+<span>$b</span><span>;
</span><span>echo</span> 'add test:'<span>;
</span><span>echo</span><span>$c</span><span>;
</span><span>return</span><span>$c</span><span>;
}
add(</span>1,2);輸出結果：
add test:3
二、呼叫類別裡面函數
1、雙冒號::，不用實例化，直接類別名稱
1、雙冒號::，不用實例化，直接類別名稱
>，實例化後的物件使用
<span>class</span><span> test{
</span><span>public</span><span>function</span> add(<span>$a</span>,<span>$b</span><span>){
</span><span>$c</span>=<span>$a</span>+<span>$b</span><span>;
</span><span>echo</span> 'class test:'<span>;
</span><span>echo</span><span>$c</span><span>;
</span><span>return</span><span>$c</span><span>;
}
}
test</span>::add(1,2);以上就介紹了PHP學習日記（一）－類別、函數的使用，包括了物件方面的內容，希望對PHP教程有興趣的朋友有所幫助。
