PHP学习笔记7-JSON数据操作

<span>1</span><span>//</span><span>encode
</span><span>2</span><span>//生成JSON格式数据</span><span>3</span><span>$arr</span> = <span>array</span>(1,2,3,4,5,6,7,8,9,'Hello','PHP'<span>);
</span><span>4</span><span>echo</span> json_encode(<span>$arr</span>);<span>//</span><span>json_encode:把一个对象转换成json格式数据</span>

<span>1</span><span>//</span><span>decode 解码</span><span>2</span><span>$jsonStr</span> = '{"h":"Hello","w":"World","0":[3,2,1]}'<span>;
</span><span>3</span><span>$obj</span> = json_decode(<span>$jsonStr</span><span>);
</span><span>4</span><span>echo</span><span>$obj</span>->h;<span>//</span><span>使用成员访问的方式就可以得到结果</span>