PHP json_encode多维关联数组 [英] PHP json_encode multidimensional associative array
问题描述
我已经多次使用php的json_encode()
函数,但是由于某些原因,我似乎在这里找不到问题...
I've used php's json_encode()
function many times, but for some reason I can't seem to find the problem here...
注意:为了清晰起见,我已删除了错误检查.
Note: I've removed error checking for clarity purposes.
//PHP
<?php
session_start();
require 'global/query.php';
$sql = "SELECT sfl,station,latitude,longitude,address,city FROM maps";
$stmt = $pdo->prepare($sql);
$stmt->execute();
while($result = $stmt->fetch(PDO::FETCH_ASSOC)){
$trows[] = $result;
}
echo json_encode($trows);
?>
我正在使用AJAX,只是console.log()
-正在像这样打印输出以打印响应...
I'm using AJAX and am just console.log()
-ing the output to print the response like so...
//JS
var callback = {
"projects": function(e){
console.log(e.target.response);
}
};
在控制台中,它打印空白行,其中没有任何数据...
In the console it prints a blank line with none of the data...
现在,如果我var_dump
$trows
,控制台中的输出将打印数据,因此我知道我的sql语句可以正常工作...
Now if I var_dump
the $trows
the output in the console will print the data so I know my sql statement works just fine...
//PHP
var_dump($trows);
//控制台
array(522) {
[0]=>
array(6) {
["sfl"]=>
string(1) "1"
["station"]=>
string(26) "COMPRESSOR STATION"
["latitude"]=>
string(2) "23"
["longitude"]=>
string(4) "-115"
["address"]=>
string(10) "Unnamed Rd"
["city"]=>
string(9) "blah"
}
[1]=>
array(6) {
["sfl"]=>
string(1) "2"
["station"]=>
string(17) "STA TERMINAL"
["latitude"]=>
string(2) "16"
["longitude"]=>
string(4) "-101"
["address"]=>
string(11) "15 Ranch Dr"
["city"]=>
string(8) "Blah Blah"
},
问题:为什么我的php的json_encode函数不能正常工作?我之前使用过此确切的代码,并且输出很好.
Questions: Why isn't my php's json_encode function working? I've used this exact code before and the output was fine.
推荐答案
尝试添加:
header("Content-type: application/json; charset=utf-8");
在回显JSON编码结果之前.
Before you echo your JSON encoded result.
如果编码不起作用,请尝试以下操作:
If the encoding doesn't work try the following:
while ($result = $stmt->fetch(PDO::FETCH_ASSOC))
{
$trows[] = array_map('utf8_encode', $result);
}
这篇关于PHP json_encode多维关联数组的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!