How to parse a JSON string in PHP?

Try this :

$json = '{
"server_response": [
    {
        "error": true,
        "instId": "1",
        "instName": "abc",
        "instDescription": "my description",
        "instLogo": "web.com/image/mylogo.jgp"
    }
]
}';
$result = json_decode ($json);
echo $result->server_response[0]->instId.' ';
echo $result->server_response[0]->instName.' ';
echo $result->server_response[0]->instDescription.' ';
echo $result->server_response[0]->instLogo.' ';

Edit: It convert Json to php object. Since there is only on Json array, you can get directly the element. If you have more array inside of Json then you can foreach each $result->server_response. For example :

foreach($result->server_response as $item)

Php has two build-in functions (mainly) to work with JSON this are:

• json_encode(param)
• json_decode();

The later one return an associative array with the key value pairs.