我的JSON字符串,
$rs
是我的阵列,
我正在做,
while($ra[] = mysql_fetch_assoc($dno))
{
$restaurants['id']=$ra[$counter]['R_ID'];
$restaurants['name']=$ra[$counter]['name'];
$distancefull = distance($userlat, $userlon, $ra[$counter]['lat'], $ra[$counter]['lng'], "K");
$restaurants['distance'] = (float)round($distancefull, 2);
$restaurants['contact']=$ra[$counter]['contact'];
$restaurants['area']=$ra[$counter]['area'];
$counter++;
$rs[]=$restaurants;
}
function cmp($a, $b)
{
//return strcmp($a["distance"], $b["distance"]);
return ($a["distance"] - $b["distance"]);
}
usort($rs, "cmp");
return $rs;
然后,
json_encode(array('Reataurants'=>$rs),JSON_NUMERIC_CHECK);
我想按距离对对象进行排序,但只完成了前两个。
感谢您的帮助。
答案 0 :(得分:0)
距离看起来像浮动而不是字符串。做:
function cmp($a, $b) {
return $a["distance"] - $b["distance"];
}