Configuration API for PubNub PHP SDK
PHP V4 complete API reference for building real-time applications on PubNub, including basic usage and sample code.
Configuration
Description
PNConfiguration
instance is storage for user-provided information which describe further PubNub client behavior. Configuration instance contain additional set of properties which allow to perform precise PubNub client configuration.
Method(s)
To create configuration
instance you can use the following function in the PHP V4 SDK:
new PNConfiguration();
Parameter | Type | Required | Default | Description |
---|---|---|---|---|
subscribeKey | String | Yes | subscribeKey from Admin Portal | |
publishKey | String | Optional | null | publishKey from Admin Portal (only required if publishing) |
secretKey | String | Optional | null | secretKey (only required for modifying/revealing access permissions) |
cipherKey | String | Optional | null | If cipherKey is passed, all communications to/from PubNub will be encrypted. |
UserId | String | Yes | UUID to use. You should set a unique UUID to identify the user or the device that connects to PubNub. It's a UTF-8 encoded string of up to 64 alphanumeric characters. If you don't set theUUID , you won't be able to connect to PubNub. | |
authKey | String | Optional | null | If Access Manager is utilized, client will use this authKey in all restricted requests. |
ssl | Boolean | Optional | true | Use ssl |
connectTimeout | Integer | Optional | 10 | How long to wait before giving up connection to client.The value is in seconds. |
subscribeTimeout | Integer | Optional | 310 | How long to keep the subscribe loop running before disconnect.The value is in seconds. |
nonSubscribeRequestTimeout | Integer | Optional | 10 | On non subscribe operations, how long to wait for server response.The value is in seconds. |
filterExpression | String | Optional | null | Feature to subscribe with a custom filter expression. |
origin | String | Optional | ps.pndsn.com | Custom origin if needed. |
useRandomIV | Boolean | Optional | true | When true the initialization vector (IV) is random for all requests (not just for file upload). When false the IV is hard-coded for all requests except for file upload. |
Disabling random initialization vector
Disable random initialization vector (IV) only for backward compatibility (<4.3.0
) with existing applications. Never disable random IV on new applications.
Basic Usage
Required UUID
UUID
Always set the UUID
to uniquely identify the user or device that connects to PubNub. This UUID
should be persisted, and should remain unchanged for the lifetime of the user or the device. If you don't set the UUID
, you won't be able to connect to PubNub.
use PubNub\PNConfiguration;
$pnConfiguration = new PNConfiguration();
// subscribeKey from Admin Portal
$pnConfiguration->setSubscribeKey("my_sub_key"); // required
// publishKey from Admin Portal (only required if publishing)
$pnConfiguration->setPublishKey("my_pub_key");
// secretKey (only required for modifying/revealing access permissions)
$pnConfiguration->setSecretKey("my_secretKey");
// if cipherKey is passed, all communicatons to/from pubnub will be encrypted
$pnConfiguration->setCipherKey("my_cipherKey");
show all 37 linesRest Response from Server
Configured and ready to use client configuration instance.
Initialization
Add PubNub to your project using one of the procedures defined under How to Get It.
Use PHP SDK in your code
use PubNub\PubNub;
PEM files can be downloaded for the domains pubsub.pubnub.com
, pubsub.pubnub.net
and ps.pndsn.com
using the commands:
echo Q | openssl s_client -connect pubsub.pubnub.com:443 -servername pubsub.pubnub.com -showcerts
echo Q | openssl s_client -connect pubsub.pubnub.net:443 -servername pubsub.pubnub.net -showcerts
echo Q | openssl s_client -connect ps.pndsn.com:443 -servername ps.pndsn.com -showcerts
You need to set the verify_peer
to true
to use the PEM files.
Description
This function is used for initializing the PubNub Client API context. This function must be called before attempting to utilize any API functionality in order to establish account level credentials such as publishKey
and subscribeKey
.
Method(s)
To Initialize
PubNub you can use the following method(s) in the PHP V4 SDK:
new PubNub($pnconf);
Parameter | Type | Required | Description |
---|---|---|---|
pnConfiguration | PNConfiguration | Yes | Goto Configuration for more details. |
Basic Usage
Initialize the PubNub client API
Required UserId
UserId
Always set the UserId
to uniquely identify the user or device that connects to PubNub. This UserId
should be persisted, and should remain unchanged for the lifetime of the user or the device. If you don't set the UserId
, you won't be able to connect to PubNub.
use PubNub\PNConfiguration;
use PubNub\PubNub;
$pnconf = new PNConfiguration();
$pnconf->setSubscribeKey("my-key");
$pnconf->setPublishKey("my-key");
$pnconf->setSecure(false);
$pnconf->setUserId("myUniqueUserId");
$pubnub = new PubNub($pnconf);
Returns
It returns the PubNub instance for invoking PubNub APIs like publish()
, subscribe()
, history()
, hereNow()
, etc.
Other Examples
Initialize a non-secure client
Required UserId
UserId
Always set the UserId
to uniquely identify the user or device that connects to PubNub. This UserId
should be persisted, and should remain unchanged for the lifetime of the user or the device. If you don't set the UserId
, you won't be able to connect to PubNub.
use PubNub\PNConfiguration;
use PubNub\PubNub;
$pnConfiguration = new PNConfiguration();
$pnConfiguration->setSubscribeKey("my_sub_key");
$pnConfiguration->setPublishKey("my_pub_key");
$pnConfiguration->setSecure(false);
$pnConfiguration->setUserId("myUniqueUserId");
$pubnub = new PubNub($pnConfiguration);
Initialization for a Read-Only client
In the case where a client will only read messages and never publish to a channel, you can simply omit the publishKey
when initializing the client:
Required UserId
UserId
Always set the UserId
to uniquely identify the user or device that connects to PubNub. This UserId
should be persisted, and should remain unchanged for the lifetime of the user or the device. If you don't set the UserId
, you won't be able to connect to PubNub.
use PubNub\PNConfiguration;
use PubNub\PubNub;
$pnConfiguration = new PNConfiguration();
$pnConfiguration->setSubscribeKey("my_sub_key");
$pubnub = new PubNub($pnConfiguration);
Use a custom UUID
Set a custom UserId
to identify your users.
Required UserId
UserId
Always set the UserId
to uniquely identify the user or device that connects to PubNub. This UserId
should be persisted, and should remain unchanged for the lifetime of the user or the device. If you don't set the UserId
, you won't be able to connect to PubNub.
use PubNub\PNConfiguration;
use PubNub\PubNub;
$pnconf = new PNConfiguration();
$pnconf->setSubscribeKey("mySubscribeKey");
$pnconf->setPublishKey("myPublishKey");
$pnconf->setUserId("myUniqueUserId");
$pubnub = new PubNub($pnconf);
Initializing with Access Manager
Requires Access Manager add-on
This method requires that the Access Manager add-on is enabled for your key in the Admin Portal. Read the support page on enabling add-on features on your keys.
Secure your secretKey
secretKey
Anyone with the secretKey
can grant and revoke permissions to your app. Never let your secret key be discovered, and to only exchange it / deliver it securely. Only use the secretKey
on secure server-side platforms.
When you init with secretKey
, you get root permissions for the Access Manager. With this feature you don't have to grant access to your servers to access channel data. The servers get all access on all channels.
For applications that will administer Access Manager permissions, the API is initialized with the secretKey
as in the following example:
Required UserId
UserId
Always set the UserId
to uniquely identify the user or device that connects to PubNub. This UserId
should be persisted, and should remain unchanged for the lifetime of the user or the device. If you don't set the UserId
, you won't be able to connect to PubNub.
use PubNub\PNConfiguration;
use PubNub\PubNub;
$pnConfiguration = new PNConfiguration();
$pnConfiguration->setSubscribeKey("my_sub_key");
$pnConfiguration->setPublishKey("my_pub_key");
$pnConfiguration->setSecretKey("my_secret_key");
$pnConfiguration->setUserId("myUniqueUserId");
$pubnub = new PubNub($pnConfiguration);
Now that the pubnub object is instantiated the client will be able to access the Access Manager functions. The pubnub object will use the secretKey
to sign all Access Manager messages to the PubNub Network.
Event Listeners
Description
You can be notified of connectivity status, message and presence notifications via the listeners.
Listeners should be added before calling the method.
Adding Listeners
use PubNub\PubNub;
use PubNub\Enums\PNStatusCategory;
use PubNub\Callbacks\SubscribeCallback;
use PubNub\PNConfiguration;
class MySubscribeCallback extends SubscribeCallback {
function status($pubnub, $status) {
if ($status->getCategory() === PNStatusCategory::PNUnexpectedDisconnectCategory) {
// This event happens when radio / connectivity is lost
} else if ($status->getCategory() === PNStatusCategory::PNConnectedCategory){
// Connect event. You can do stuff like publish, and know you'll get it // Or just use the connected event to confirm you are subscribed for // UI / internal notifications, etc
} else if ($status->getCategory() === PNStatusCategory::PNDecryptionErrorCategory){
// Handle message decryption error. Probably client configured to // encrypt messages and on live data feed it received plain text.
}
}
show all 47 linesRemoving Listeners
$subscribeCallback = new MySubscribeCallback();
$pubnub->addListener($subscribeCallback);
// some time later
$pubnub->removeListener($subscribeCallback);
Listener status events
Category | Description |
---|---|
PNConnectedCategory | SDK subscribed with a new mix of channels (fired every time the channel / channel group mix changed). |
PNAccessDeniedCategory | Request failed because of access error (active Access Manager). status.errorData.channels or status.errorData.channelGroups contain list of channels and/or groups to which user with specified auth key doesn't have access. |
PNMalformedResponseCategory | Request received in response non-JSON data. It can be because of publish WiFi hotspot which require authorization or proxy server message. |
PNBadRequestCategory | Request can't be completed because not all required values has been passed or passed values has unexpected data type. |
PNDecryptionErrorCategory | Message Persistence API may return this status category in case if some messages can't be decrypted. Unencrypted message will be returned in status.associatedObject where associatedObject is PNMessageData which contain channel and message properties. |
PNTimeoutCategory | Used API didn't received response from server in time. |
PNUnknownCategory | No specific category was assigned to the request. |
PNUnexpectedDisconnectCategory | The SDK is not able to reach the PubNub Data Stream Network because the machine or device are not connected to Internet or this has been lost, your ISP (Internet Service Provider) is having to troubles or perhaps or the SDK is behind of a proxy. |
PNUnexpectedDisconnectCategory | The SDK is not able to reach the PubNub Data Stream Network because the machine or device are not connected to Internet or this has been lost, your ISP (Internet Service Provider) is having to troubles or perhaps or the SDK is behind of a proxy. |
PNCancelledCategory | Request was cancelled by user. |
PNUnknownCategory | Unknown error happened. |
UserId
Description
These functions are used to set/get a user ID on the fly.
Property(s)
To set/get UserId
you can use the following property(s) in PHP V4 SDK:
Set UserId
$pnconf->setUuid(string);
Parameter | Type | Required | Default | Description |
---|---|---|---|---|
UserId | String | Yes | UserId to be used as a device identifier. If you don't set the UserId , you won't be able to connect to PubNub. |
Get UserId
$pnconf->getUserId();
This method doesn't take any arguments.
Basic Usage
Set UserId
Required UserId
UserId
Always set the UserId
to uniquely identify the user or device that connects to PubNub. This UserId
should be persisted, and should remain unchanged for the lifetime of the user or the device. If you don't set the UserId
, you won't be able to connect to PubNub.
$pnconf = new PNConfiguration();
$pnconf->setUserId("myUniqueUserId");
Get UserId
$pubnub->getConfiguration()
->getUserId();
Authentication Key
Description
Setter and getter for users auth key.
Set Auth Key
$pnconf->setAuthKey(string);
Parameter | Type | Required | Description |
---|---|---|---|
AuthKey | String | Yes | If Access Manager is utilized, client will use this authkey in all restricted requests. |
Get Auth Key
$pnconf->getAuthKey();
This method doesn't take any argument.
Basic Usage
Set Auth Key
$pubnub->getConfiguration()
->setAuthKey("my_newauthkey");
Get Auth Key
$pubnub->getConfiguration()
->getAuthKey();
Returns
None.
Filter Expression
Requires Stream Controller add-on
This method requires that the Stream Controller add-on is enabled for your key in the Admin Portal. Read the support page on enabling add-on features on your keys.
Description
Stream filtering allows a subscriber to apply a filter to only receive messages that satisfy the conditions of the filter. The message filter is set by the subscribing client(s) but it is applied on the server side thus preventing unwanted messages (those that do not meet the conditions of the filter) from reaching the subscriber.
To set or get message filters, you can use the following methods. To learn more about filtering, refer to the Publish Messages documentation.
Method(s)
Set Filter Expression
setFilterExpression( string filterExpression )
Parameter | Type | Required | Description |
---|---|---|---|
filterExpression | string | Yes | Logical expression to be evaluated on PubNub servers |
Get Filter Expression
getFilterExpression
This method doesn't take any arguments.
Basic Usage
Set Filter Expression
Required UserId
UserId
Always set the UserId
to uniquely identify the user or device that connects to PubNub. This UserId
should be persisted, and should remain unchanged for the lifetime of the user or the device. If you don't set the UserId
, you won't be able to connect to PubNub.
use PubNub\PNConfiguration;
use PubNub\PubNub;
$pnconf = new PNConfiguration();
$pnconf->setSubscribeKey("my_sub_key");
$pnconf->setFilterExpression("userid == 'my_userid'");
$pubnub = new PubNub($pnconf);
Get Filter Expression
$pubnub->getFilterConfiguration();