json_encode 中文变成null_PHP教程

<?<span php
  </span><span $brand</span> = <span array</span>('id'=>'123456','name'=>'联想'<span );
  </span><span var_dump</span>(json_encode(<span $brand</span><span ));
</span>?>

<span string</span>(27) "{"id":"123456","name":null}"

<?<span php
  </span><span function</span> gbk2utf8(<span $data</span><span ){
    </span><span if</span>(<span is_array</span>(<span $data</span><span )){
      </span><span return</span> <span array_map</span>('gbk2utf8', <span $data</span><span );
    }
    </span><span return</span> <span iconv</span>('gbk','utf-8',<span $data</span><span );
  }
</span>?>

<?<span php
  </span><span $brand</span> = <span array</span>('id'=>'123456','name'=>'联想'<span );
  </span><span var_dump</span>(json_encode(gbk2utf8(<span $brand</span><span )));
</span>?>

<span string</span>(37) "{"id":"123456","name":"\u8054\u60f3"}"