Android - php :echo json_encode($jobj);Expected BEGIN_OBJECT but was STRING

.php

<meta setcode=""utf8/>

<?php

....................

.....

?>

<?php

..........

echo json_encode($jobj);

?>

.java Log:Expected BEGIN_OBJECT but was STRING

.........喵嗚

public List<a>  parsejson(String json){

Log.e（"Json_miao",）；

}

LogCat:：喵嗚，服務器居然把<meta>標籤和兩個<?php>之間的空行也放進json裏返回給我了

Json_miao            <meta setcode=""utf8/>

Json_miao

Json_miao

Json_miao

Json_miao          {[.....real_json....]}