Read a particular value of JSON - php

Question

{
"success" : true,
"message" : "",
"result" : {
"uuid" : "e606d53"
}
}
I am trying to read UUID
$obj = json_decode($execResult, true);
print_r($obj);
$UniID = $obj["result"]["uuid"];
echo $UniID; ///result Blank

Answer 1

Given the JSON you included at the top of the question as input, the print_r statement will output this:
Array
(
[success] => 1
[message] =>
[result] => Array
(
[uuid] => e606d53
)
)
But you said, in a comment:
the output is the same as i posted before
The only way I can interpret this is that you mean the JSON you included at the top of the question is the result of the print_r statement.
This suggests that your JSON is double encoded.
i.e. that there was an associative array which was encoded as a JSON text. Then that JSON text was encoded as a JSON text.
Since it was encoded twice, you need to decode it twice:
<?php
$execResult = '"{\n \"success\" : true,\n \"message\" : \"\",\n \"result\" : {\n \"uuid\" : \"e606d53\"\n }\n}"';
print "Original JSON\n\n";
print_r($execResult);
$decode_1 = json_decode($execResult, true);
print "\n\nDecoded once\n\n";
print_r($decode_1);
$decode_2 = json_decode($decode_1, true);
print "\n\nDecoded twice\n\n";
print_r($decode_2);
print "\n\$decode_2[\"result\"][\"uuid\"]\n\n";
$UniID = $decode_2["result"]["uuid"];
echo $UniID; ///result Blank
?>
Which outputs:
Original JSON
"{\n \"success\" : true,\n \"message\" : \"\",\n \"result\" : {\n \"uuid\" : \"e606d53\"\n }\n}"
Decoded once
{
"success" : true,
"message" : "",
"result" : {
"uuid" : "e606d53"
}
}
Decoded twice
Array
(
[success] => 1
[message] =>
[result] => Array
(
[uuid] => e606d53
)
)
$decode_2["result"]["uuid"]
e606d53

Answer 2

You can give it a try. It should work fine for your code.
$obj = json_decode($execResult);
echo $obj->result->uuid;