我想输出一个使用PHP和MySQL的JSON字符串,但经度和纬度输出为带有引号的字符串值。当我尝试将标记添加到谷歌地图时,这会导致问题。PHP JSON编码输出数字为字符串
这里是我的代码:
$sql = mysql_query('SELECT * FROM markers WHERE address !=""');
$results = array();
while($row = mysql_fetch_array($sql))
{
$results[] = array(
'latitude' =>$row['lat'],
'longitude' => $row['lng'],
'address' => $row['address'],
'project_ID' => $row['project_ID'],
'marker_id' => $row['marker_id']
);
}
$json = json_encode($results);
echo "{\"markers\":";
echo $json;
echo "}";
这里是预期输出:
{"markers":[{"latitude":0.000000,"longitude":0.000000,"address":"2234 2nd Ave, Seattle, WA","project_ID":"7","marker_id":"21"}]}
这里是我得到的输出:
{"markers":[{"latitude":"0.000000","longitude":"0.000000","address":"2234 2nd Ave, Seattle, WA","project_ID":"7","marker_id":"21"}]}
注意周围的引号纬度和经度值。
这些JSON_ *常量在要求中相当重要:) – 2012-07-10 03:06:13
请注意,这只适用于PHP> = 5.3。如果你需要支持旧版本(许多网站在编写PHP 5.2的时候),@Allen Chak的回复相当不错 – kakoma 2014-12-04 09:25:40
你为我节省了很多时间。 – Jordy 2015-02-06 12:35:51