PHP json_decode() Function
Example
Store JSON data in a PHP variable, and then decode it into a PHP object:
$jsonobj = '{"Peter":35,"Ben":37,"Joe":43}';
var_dump(json_decode($jsonobj));
Definition and Usage
The json_decode() function is used to decode or convert a JSON object to a PHP object.
Syntax
json_decode(string, assoc, depth, options)
Parameter Values
| Parameter | Description |
|---|---|
| string | Required. Specifies the value to be decoded |
| assoc | Optional. Specifies a Boolean value. When set to true, the returned object will be converted into an associative array. When set to false, it returns an object. False is default |
| depth | Optional. Specifies the recursion depth. Default recursion depth is 512 |
| options | Optional. Specifies a bitmask (JSON_BIGINT_AS_STRING, JSON_INVALID_UTF8_IGNORE, JSON_INVALID_UTF8_SUBSTITUTE, JSON_OBJECT_AS_ARRAY, JSON_THROW_ON_ERROR) |
Technical Details
| Return Value: | Returns the value encoded in JSON in appropriate PHP type. If the JSON object cannot be decoded it returns NULL |
|---|---|
| PHP Version: | 5.2+ |
| PHP Changelog: | PHP 7.3: Added JSON_THROWN_ON_ERROR option PHP 7.2: Added JSON_INVALID_UTF8_IGNORE, and JSON_INVALID_UTF8_SUBSTITUTE options PHP 5.4: Added JSON_BIGINT_AS_STRING, and JSON_OBJECT_AS_ARRAY options PHP 5.4: Added options parameter PHP 5.3: Added depth parameter |
More Examples
Example
Store JSON data in a PHP variable, and then decode it into a PHP associative array:
$jsonobj = '{"Peter":35,"Ben":37,"Joe":43}';
var_dump(json_decode($jsonobj, true));
Example
How to access the values from the PHP object:
$jsonobj = '{"Peter":35,"Ben":37,"Joe":43}';
$obj = json_decode($jsonobj);
echo $obj->Peter;
echo $obj->Ben;
echo $obj->Joe;
Example
How to access the values from the PHP associative array:
$jsonobj = '{"Peter":35,"Ben":37,"Joe":43}';
$arr = json_decode($jsonobj, true);
echo $arr["Peter"];
echo $arr["Ben"];
echo $arr["Joe"];
❮ PHP JSON Reference
