need to extract a particular field from $response object - php

Question

<?php
$apiKey = 'HnUvAYIy5hO7iPki';
$apiSecret = '9HBkibOphng7w4p1ZdiiVJgzRI4kpD4Q';
$msg = filter_input(INPUT_GET,"msg",FILTER_SANITIZE_STRING);
$message = array(
'message' => array(
'message' => ''.$msg.'',
'chatBotID' => 6,
'timestamp' => time()
),
'user' => array(
'firstName' => 'Tugger',
'lastName' => 'Sufani',
'gender' => 'm',
'externalID' => 'abc-639184572'
)
);
// construct the data
$host = "http://www.personalityforge.com/api/chat/";
$messageJSON = json_encode($message);
$hash = hash_hmac('sha256', $messageJSON, $apiSecret);
$url = $host."?apiKey=".$apiKey."&hash=".$hash."&message=".urlencode($messageJSON);
// Make the call using cURL
$ch = curl_init();
// set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// make the call
$response = curl_exec($ch);
curl_close($ch);
echo 'Response JSON: '.$response.'<br>';
?>
-----------------following is the outcome of above code--------------------------------
Response JSON:
Correct parameters and objects received
raw message: {"message":{"message":"hi","chatBotID":6,"timestamp":1407393907},"user":{"firstName":"Tugger","lastName":"Sufani","gender":"m","externalID":"abc-639184572"}}
apiSecret: 9HBkibOphng7w4p1ZdiiVJgzRI4kpD4Q
Do the following two match?
a702fc336f49b099764d35a548dd110fac2067bcd14a438676e4d579d70b6afc
a702fc336f49b099764d35a548dd110fac2067bcd14a438676e4d579d70b6afc
CORRECT MATCH!
Array
(
[message] => Array
(
[message] => hi
[chatBotID] => 6
[timestamp] => 1407393907
)
[user] => Array
(
[firstName] => Tugger
[lastName] => Sufani
[gender] => m
[externalID] => abc-639184572
)
)
sent on Thu, 07 Aug 2014 2:45:07 am
6 seconds ago. (limit is 300)
{"success":1,"errorMessage":"","message":{"chatBotName":"Desti","chatBotID":"6","message":"Yes, Tugger, I've heard that one before.","emotion":"normal"}}
now i need to get the message field content that is in italics
thanks in advance.... pls help... i tried a lot :-)

Answer 1

if you look forward to have a regex solution here it is
Regex
"message":"(.*?)"
TestString
{"success":1,"errorMessage":"","message":{"chatBotName":"Desti","chatBotID":"6","message":"Yes, Tugger, I've heard that one before.","emotion":"normal"}
Result
MATCH 1
[91-131] Yes, Tugger, I've heard that one before.
try demo here
PHP usage
preg_match('/(?<=success).*"message":"(.*?)"/', $response , $matches);
$message = $matches[1];
regex updated to match with the full response text
try demo here

Answer 2

use json_decode(), it will return
(
[success] => 1
[errorMessage] =>
[message] => stdClass Object
(
[chatBotName] => Desti
[chatBotID] => 6
[message] => Yes, Tugger, I've heard that one before.
[emotion] => normal
)
Sample :
$output = json_decode($input,true);
print_r($output);
echo "<br />".$output['message']['message'];
?>