doutan1905 2019-04-23 10:19
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PHP CURL错误:数据返回NULL值

I have a JSON code which I put in JSON file named data.json

the JSON Code is :

[
 {"value":"23","date":"03/2018"},
 {"value":"43","date":"03/2019"},
 {"value":"34","date":"12/2017"},
 {"value":"13","date":"01/2019"},
 {"value":"34","date":"02/2019"}
]

Now The php Code I am using to fetch the data is as Follows :

$url = "data.json" ;

$ch = curl_init() ;

curl_setopt($ch, CURLOPT_URL, $url) ;
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
$result = curl_exec($ch);


curl_close($ch) ;


$data = json_decode($result, true) ;

foreach($data as $mydata)
{
  $data1 = $mydata["value"] ;
  $data2 = $mydata["date"] ;

echo $data1 ." : ". $data2 ;
echo "<br/>";

}

I Don't understand what's wrong with the code but it gives an error Warning

Invalid argument supplied for foreach()

This Happens Because the Data is returning NULL Value But I Don't How my JSON Data Format is not correct. THe Format Looks Fine. But it still returns NULL Value.

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4条回答 默认 最新

  • dongliang1873 2019-04-23 10:58
    关注

    You have to provide the full URL of the JSON file if you are using CURL, instead of the data.json

    http://localhost/text.json 
    

    other options to get the data from json

    $result = file_get_contents($url);
    
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