如何制作json格式的php数组以及如何获取json字符串值

here i have one array in this array i want to make json,i tried but i am unable to get the exact format what i want,any one please help me,

This my array

var_dump($absentresponse);

     array(1) {
  [0]=>
  array(9) {
    ["absendId"]=>
    string(1) "1"
    ["studentAbsentId"]=>
    string(9) "["1","2"]"
    ["studentAbsentDate"]=>
    string(10) "2017-04-11"
    ["schoolId"]=>
    string(1) "2"
    ["classId"]=>
    string(1) "1"
    ["sectionId"]=>
    string(1) "1"
    ["reg_date"]=>
    string(19) "2017-04-13 01:01:03"
    ["created_by"]=>
    string(29) "kanniyappan@g2evolution.co.in"
    ["status"]=>
    string(1) "0"
  }
}

My expected results

    {
    "status": 1,
    "data": 
    [
    {
      "studentabsentId":"1"
      "studentAbsentDate": "2017-04-12"
    },
    {
      "studentabsentId":"2"
      "studentAbsentDate": "2017-04-12"
    }
    ]
}

My Update Code

$json_response = json_encode($absentresponse); echo $json_response;

    [
  {
    "absendId": "1",
    "studentAbsentId": "[\"1\",\"2\"]",
    "studentAbsentDate": "2017-04-11",
    "schoolId": "2",
    "classId": "1",
    "sectionId": "1",
    "reg_date": "2017-04-13 01:01:03",
    "created_by": "kanniyappan@g2evolution.co.in",
    "status": "0"
  }
]

Please try below code:

    $json_response = json_encode($absentresponse);
    echo $json_response;

$absentresponse_json = json_encode($absentresponse);

Unless I'm not understanding your question, that should do it.

I think there is some wrong format in your array. Please recheck on index studentAbsentId, I think that should be an array, not a string. Below is my code if we assume that value of studentAbsentId is an array of student ID.

    $newArray = array();
    $newArray['status'] = $absentresponse['status'];
    $newArray['data'] = array();
    foreach($absentresponse['studentAbsentId'] as $id){
        $data['studentabsentId'] = $id;
        $data['studentAbsentDate'] = $absentresponse['studentAbsentDate'];
        $newArray['data'][] = $data;
    }

    $json = json_encode($newArray);

    $absentresponse = array();
    $data['status'] = 1;
    foreach ($absentresponse as $key => $value) {
        $row = array();
        $row['absendId'] = $value['absendId'];
        $row['studentAbsentId'] = $value['studentAbsentId'];
        $row['studentAbsentDate'] = $value['studentAbsentDate'];
        $row['schoolId'] = $value['schoolId'];
        $row['classId'] = $value['classId'];
        $row['sectionId'] = $value['sectionId'];
        $row['reg_date'] = $value['reg_date'];
        $row['created_by'] = $value['created_by'];
        $data['data'][] = $row;
    }
    echo json_encode($data);