Error Parsing JSON file with PHP - php

Question

I have a string like this:
{
"update_id":659510742,
"message":{
"message_id":178,
"from":{
"id":110910409,
"first_name":"S.M_Emamian"
},
"chat":{
"id":-57184742,
"title":"Vvggg",
"type":"group"
},
"date":1446970836,
"new_chat_participant":{
"id":131677747,
"first_name":"Shadyab",
"username":"Shadyabbot"
}
}
}
now, I would like to get first_name. how can I get that ?
I tested below code, but it doesn't work :
$json_a = json_decode($content, true);
$first_name = $json_a->message->from->first_name; //it returns nothing.

Answer 1

$json_a = json_decode($content, true);
^^^^
That true forces the output of json_decode to be an array, but you are trying to treat it like an object. Remove that argument or use array syntax:
$first_name = $json_a['message']['from']['first_name'];

Answer 2

use only json_decode($content) remove true
try this code :-
$json_a = json_decode($content);
echo $json_a->message->from->first_name;
True convert the output of json_decode to be an array

Answer 3

$json_a = json_decode($content, true);
$first_name = $json_a->message->from->first_name; //it returns nothing.
That's because the function returns an associative array, and not an object.
By using -> you're trying to access object properties of $json_a. What you're really looking for is:
$json_a["message"]["from"]["first_name"]
This way you're accessing the associative array values by their key, and not trying to access object properties.
I hope this helped,
Sebastian

Answer 4

$json_a = json_decode($content);
$first_name = $json_a->message->from->first_name;
or
$json_a = json_decode($content,true);
$first_name = $json_a[message][from][first_name];

Answer 5

You're passing true as the second argument to json_decode which tells it to return an associative array rather than an object.
Either remove the second argument (or change it to the default, false), or access the fields using array syntax:
$first_name = $json['message']['from']['first_name'];

Answer 6

json_decode() is a php function used to decode json into either php standard object or an associative array dependent upon argument passed to it
When true it will return an associative otherwise by default it returns standard PHP object
According to your requirement please try executing following code snippet for retrieving first name from json document.
$json_a = json_decode($content, true);
$first_name = $json_a['message']['from']['first_name'];
For more detailed description regarding parsing json documents in php please refer the documentation in following URL
http://php.net/manual/en/function.json-decode.php