未在codeigniter中定义常量JSON_UNESCAPED_UNICODE [英] undefined constant JSON_UNESCAPED_UNICODE in codeigniter

问题描述

我创建一个Json文件

I create a Json file

$json = array(
    "Add"=>array(
    "context" => "$context",
    "date"=> "$date"
    ),
    "Version"=>array(
    "version"=>$version
    )
);

$context是波斯文字(所以我的Json需要UTF-8格式).现在我用这个

And $context is a persian text(so i need a UTF-8 format for my Json) . Now i use this

echo json_encode($json,JSON_UNESCAPED_UNICODE);

查看我的json文件，但Codeigniter给出了这两个错误

to see my json file ,but Codeigniter gives these 2 errors

A PHP Error was encountered

Severity: Notice

Message: Use of undefined constant JSON_UNESCAPED_UNICODE - assumed 'JSON_UNESCAPED_UNICODE'

和

A PHP Error was encountered

Severity: Warning

Message: json_encode() expects parameter 2 to be long, string given

有什么想法吗?谢谢.

推荐答案

来自文档:

JSON_UNESCAPED_UNICODE(整数)

[...]自PHP 5.4.0起可用.

JSON_UNESCAPED_UNICODE (integer)

[...] Available since PHP 5.4.0.

您的PHP版本没有定义的常量(并且定义常量将无济于事).

Your version of PHP does not have the constant defined (and defining it won't help).

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