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Home Backend Development PHP Tutorial PHP生成JSON相关的问题

PHP生成JSON相关的问题

Jun 06, 2016 pm 08:29 PM
json php

关于PHP生成JSON数据的几个问题。

<code>foreach($re as $key=>$value){
    $dd['code'][0]->$key=$value;
    }
$ff = json_encode($dd);
print_r($ff);

// 输出
{"code":[{"0":{"key":"value"},"1":{"key":"value"}}]}</code>
Copy after login
Copy after login

请问要怎么在code前现加一点内容呢?比如:"url":"www.com",使生成的JSON就成这样。

<code>{"url":"www.com", "code":{"0":{"key":"value"},"1":{"key":"value"}}}}</code>
Copy after login
Copy after login

还就是输出的中文全变成了这样\u8f8a\u67e5\u538d,要怎么才能输出成中文呢?

Google了半天都没找到办法,找到的基本全这样的。

<code>$aa = urlencode($dd);
echo urldecode(json_encode($aa));</code>
Copy after login
Copy after login

可是这样不仅不能输出中文,连输出都没有了。。。
var_dump($aa)输出的是NULL,这可怎么办是好啊。。

=============追加=================
那个出现个问题。

<code>{
    "url":"www.com",
    "0":
    {
        "code":
        {
            "0":{"key":"value"},
            "1":{"key":"value"}
        }
    }
}</code>
Copy after login
Copy after login

生成的JSON会变成这样子,请问要怎么把这此数字去掉呢?

=================二追===================

<code>$aa = array("url"=>"www.com");
json_encode(array($aa,$dd['code']), JSON_UNESCAPED_UNICODE);</code>
Copy after login
Copy after login

这样能可以实现想要的,可是有个问题。
从Mysql导出来的数据时怎么会有一个序号呢?

回复内容:

关于PHP生成JSON数据的几个问题。

<code>foreach($re as $key=>$value){
    $dd['code'][0]->$key=$value;
    }
$ff = json_encode($dd);
print_r($ff);

// 输出
{"code":[{"0":{"key":"value"},"1":{"key":"value"}}]}</code>
Copy after login
Copy after login

请问要怎么在code前现加一点内容呢?比如:"url":"www.com",使生成的JSON就成这样。

<code>{"url":"www.com", "code":{"0":{"key":"value"},"1":{"key":"value"}}}}</code>
Copy after login
Copy after login

还就是输出的中文全变成了这样\u8f8a\u67e5\u538d,要怎么才能输出成中文呢?

Google了半天都没找到办法,找到的基本全这样的。

<code>$aa = urlencode($dd);
echo urldecode(json_encode($aa));</code>
Copy after login
Copy after login

可是这样不仅不能输出中文,连输出都没有了。。。
var_dump($aa)输出的是NULL,这可怎么办是好啊。。

=============追加=================
那个出现个问题。

<code>{
    "url":"www.com",
    "0":
    {
        "code":
        {
            "0":{"key":"value"},
            "1":{"key":"value"}
        }
    }
}</code>
Copy after login
Copy after login

生成的JSON会变成这样子,请问要怎么把这此数字去掉呢?

=================二追===================

<code>$aa = array("url"=>"www.com");
json_encode(array($aa,$dd['code']), JSON_UNESCAPED_UNICODE);</code>
Copy after login
Copy after login

这样能可以实现想要的,可是有个问题。
从Mysql导出来的数据时怎么会有一个序号呢?

你的问题有两个:

1,如何追加内容?

json 和 array 是对应的,就像你给数据追加内容一样:

$url = 'www.com';
$code = array(
    array('key', 'value');
    array('key', 'value');
    array('key', 'value');
);

echo json_encode(array('url'=>$url, 'code'=>$code));
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2,如何不乱码?

php5.4 之后 json 新增了一个选项 JSONUNESCAPEDUNICODE:

echo json_encode(array('url'=>$url, 'code'=>$code), JSON_UNESCAPED_UNICODE);
Copy after login

让 json 更懂中文

要在code前加上内容,可以在要转换为json的数组前加上值就可以了吧。-_-

$dd['url'] = 'www.xx.com';
Copy after login

PHP版本始于5.4后可用JSON_UNESCAPED_UNICODE参数常量来将字符不转换为unicode码,具体参考手册。

$ff = json_encode($dd, JSON_UNESCAPED_UNICODE); 
Copy after login

如果PHP版本小于5.4,可参考如下方法:

function json_encode_utf8($value) {
    $jsons = json_encode($value);
    return preg_replace(
        "#\\\u([0-9a-f]{4}+)#ie",
        "iconv('UCS-2', 'UTF-8', pack('H4', '\\1'))",
        $jsons
    );
}
Copy after login

\u8f8a\u67e5\u538d 本身就是中文啊, 这个是交给前端处理的。

PHP生成JSON相关的问题

问题1:

<code>$dd['url'] = 'www.com';
$dd['code'] = array();</code>
Copy after login

问题2:
见1楼,那个是js中推荐的汉字使用方式,与文件编码无关。js中直接使用

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