php json Chinese character escape

<code><span>$test0</span>=<span>array</span>(
    <span>'id'</span>=><span>100</span>,
    <span>'name'</span>=><span>"demo数据"</span>,
    );

<span>//将数组遍历，每个变量进行编码</span><span>foreach</span>(<span>$test0</span><span>as</span><span>$key</span>=><span>$val</span>){
  <span>$test</span>[<span>$key</span>]=urlencode(<span>$val</span>);
 }

 <span>$test2</span>=json_encode(<span>$test</span>);
 <span>$test3</span>=urldecode(<span>$test2</span>);
 <span>echo</span><span>$test3</span>;</code>