php 数组unset排序和json的问题

Question

 目录下this.txt内容为：{"this":[{"name":"a","url":"aa"},{"name":"b","url":"bb"},{"name":"c","url":"cc"}]}现在用到unset($okjson["this"][1])删除{"name":"b","url":"bb"}，并转为json字符串理想结果为{"this":[{"name":"a","url":"aa"},{"name":"c","url":"cc"}]}但用以下代码运行的结果{"this":{"0":{"name":"a","url":"aa"},"2":{"name":"c","url":"cc"}}}出现这样的情况我发现是要对索引重新排序（因为unset($okjson["this"][2])就不需要对索引重排），试过array_values但出不来想要的结果，不知道怎么修改php代码：$lu='this.txt';
$js= file_get_contents($lu);
$okjson=json_decode($js,true);
var_dump($okjson);
unset($okjson["this"][1]);
var_dump($okjson);
$okjson=json_encode( (object)$okjson);
echo $okjson;

Answer 1

unset($okjson["this"][1]);
$okjson["this"] = array_value($okjson["this"]); //这样就可使下表连续