php PHP中的非法字符串偏移错误
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Illegal string offset error in PHP
提问by Sajid Ahmad
I am sending these objects to server to fetch the record and save it. but it is giving me the below given error
我将这些对象发送到服务器以获取记录并保存。但它给了我下面给出的错误
array(3) {
[0]=>
array(1) {
["answer"]=>
string(218) "{"id":"19","question_id":"10","answer_text":"Please note that we also maintain you:",
"iscorrect":"1",
"created_at":"2014-06-07 07:52:12",
"updated_at":"2014-06-07 07:52:12"}"
}
[1]=>
array(1) {
["answer"]=>
string(218) "{"id":"20","question_id":"10","answer_text":"Please note that we also maintain the following pages and support forums to help you:",
"iscorrect":"1",
"created_at":"2014-06-07 07:52:13",
"updated_at":"2014-06-07 07:52:13"}"
}
[2]=>
array(1) {
["answer"]=>
string(218) "{"id":"21","question_id":"10",
"answer_text":"Please note that we also maintain the following pages and support forums to help you:","iscorrect":"0","created_at":"2014-06-07 07:52:13","updated_at":"2014-06-07 07:52:13"}"
}
}
{"error":{"type":"ErrorException","message":"Illegal string offset 'id'","file":"\/home\/learnomatics\/laravel\/mobillz_mlmalp\/app\/controllers\/QuizController.php","line":379}}
I am trying to get the values like
我正在尝试获得类似的值
$answers=Input::get('answers');
var_dump($answers);
foreach ($answers as $answer) {
if(isset($answer['answer'])){
quiz_que_ans_id=$answer['answer']['id'];
}
}
回答by Ja?ck
The $answer['answer']variable is a string comprising JSON encoded data; to access that, you need to decode it first:
该$answer['answer']变量是一个包含 JSON 编码数据的字符串；要访问它，您需要先对其进行解码：
$data = json_decode($answer['answer'], true);
$quiz_queue_ans_id = $data['id']; // work with decoded data
回答by Nishu Tayal
Here your answer contains a json string. Decode it before fetching any key. Try this :
在这里，您的答案包含一个 json 字符串。在获取任何密钥之前对其进行解码。尝试这个 ：
foreach ($answers as $answer) {
if(isset($answer['answer'])){
$ans = json_decode($answer['answer'],true);
if(is_array($ans)){
quiz_que_ans_id=$ans['id'];
}
}
}
回答by Bijendra Sahu
Try the following, which passes the photo into the Form::filefacade.
尝试以下操作，将照片传递到Form::file门面。
{!! Form::file('photo', $user_master->photo, ['class' => 'control-label input-sm', 'type'=>'file', 'accept'=>'image/*']) !!}
Instead of
代替
{!! Form::file('photo', null, ['class' => 'control-label input-sm', 'type'=>'file', 'accept'=>'image/*']) !!}`
