将文本解析为json

Question

I have a txt file that looks like that:

1 - 10
2 - 20
3 - 30

How can I make a json array that looks like that:

{
  "item": "1",
  "value": "10"
},

{
  "item": "2",
  "value": "20"
},

{
  "item": "3",
  "value": "30"
},

Thanks!

Answer 1

You need to read line by line from the text file and explode the line with delimiter '-'. Then create an array which can be converted to json.

// Open the file to read data.
$fh = fopen('student.txt','r');
// define an eampty array
$data = array();
// read data
while ($line = fgets($fh)) {
    // if the line has some data
   if(trim($line)!=''){
       // explode each line data 
       $line_data = explode('-',$line);
       // push data to array
       //array_push($data,array('item'=>trim($line_data[0]),'value'=>trim($line_data[1])));
       $data[]=array('item'=>trim($line_data[0]),'value'=>trim($line_data[1]));
   }
}
fclose($fh);
// json encode the array
echo $json_data = json_encode($data);

Output:

[{"item":"1","value":"10"},
{"item":"2","value":"20"},
{"item":"3","value":"30"}]