UPDATE - OFFICIAL PHP PAM SDK NOW HERE - https://github.com/pubnub/php -- PubNub Access Manager (PAM) PHP Full Library for Granting and Revoking Access in Real-Time on the PubNub Real-Time Network.

pam-example.php

<?php

// UPDATE - OFFICIAL PHP PAM SDK NOW HERE - https://github.com/pubnub/php

require('pam.php');

## PubNub Access Manager (PAM)
$manager = new access(
    "pub-c-e132b7b4-0c2c-4d36-a828-1de1ea50d167",
    "sub-c-f95db694-6ff9-11e3-9291-02ee2ddab7fe",
    "sec-c-OWFkNWQ1NDctN2JiNy00NzJmLTk3Y2ItN2ExODZlYzkyNzY0"
);

## Grant User Access
print_r($manager->grant(
    "my_channel",        // CHANNEL
    "gZW5jb2RlZCBmaWx",  // STRING (AUTH KEY)
    true,                // READ
    true,                // WRITE
    5                    // TTL in MINUTES
));

## Grant User **Presence Access**
## WARNING: The PubNub Dev Console Requires Presence Access
print_r($manager->grant(
    "my_channel-pnpres", // CHANNEL
    "gZW5jb2RlZCBmaWx",  // STRING (AUTH KEY)
    true,                // READ
    true,                // WRITE
    5                    // TTL in MINUTES
));

## Grant GLOBAL Access (any user)
## Exclude the authkey and you can global grant access to all.
print_r($manager->grant(
    "my_channel-pnpres", // CHANNEL
    "gZW5jb2RlZCBmaWx",  // STRING (AUTH KEY)
    true,                // READ
    true,                // WRITE
    5                    // TTL in MINUTES
));

## Revoke User Access
print_r($manager->revoke(
    "some-other-channel", // CHANNEL
    "gZW5jb2RlZCBmaWx"    // STRING (AUTH KEY)
));

## Revoke Global Access
print_r($manager->revoke(
    "some-other-channel" // CHANNEL
));

?>

pam.md

Include PAM and Initialize class access

UPDATE - OFFICIAL PHP PAM SDK NOW HERE - https://github.com/pubnub/php

require('pam.php');

$manager = new access(
    "pub-c-e132b7b4-0c2c-4d36-a828-1de1ea50d167",
    "sub-c-f95db694-6ff9-11e3-9291-02ee2ddab7fe",
    "sec-c-OWFkNWQ1NDctN2JiNy00NzJmLTk3Y2ItN2ExODZlYzkyNzY0"
);

Grant User Access

Grant access to user with authkey of gZW5jb2RlZCBmaWx with read and write access for 5 minute ttl.

print_r($manager->grant(
    "my_channel",        // CHANNEL
    "gZW5jb2RlZCBmaWx",  // STRING (AUTH KEY)
    true,                // READ
    true,                // WRITE
    5                    // TTL in MINUTES
));

Grant User Presence Access

Also grant access to the presence channel (required for PubNub Dev Console).

print_r($manager->grant(
    "my_channel-pnpres", // CHANNEL
    "gZW5jb2RlZCBmaWx",  // STRING (AUTH KEY)
    true,                // READ
    true,                // WRITE
    5                    // TTL in MINUTES
));

Grant GLOBAL Access (to all users)

Exclude the authkey and you can global grant access to all.

print_r($manager->grant_global(
    "my_channel", // CHANNEL
    true,         // READ
    true,         // WRITE
    5             // TTL in MINUTES
));

Forever Grant Access

You can grant access forever by setting the ttl param to 0.

print_r($manager->grant_global(
    "my_channel", // CHANNEL
    true,         // READ
    true,         // WRITE
    0             // FOREVER GRANT!!!
));

Revoke User Access

Instantly revoke access to a user.

print_r($manager->revoke(
    "some-other-channel", // CHANNEL
    "gZW5jb2RlZCBmaWx"    // STRING (AUTH KEY)
));

Revoke Global Access

You can also revoke Global Access by excluding the authkey param.

print_r($manager->revoke(
    "some-other-channel" // CHANNEL
));

Dev Console Test Link:

WARNING: PubNub Dev Console Requires Grant on Presence Channel too! You can set the presence access by granting on the suffix of -pnpres channel name.

http://www.pubnub.com/console/?channel=my_channel&sub=sub-c-f95db694-6ff9-11e3-9291-02ee2ddab7fe&pub=pub-c-e132b7b4-0c2c-4d36-a828-1de1ea50d167&sec=sec-c-OWFkNWQ1NDctN2JiNy00NzJmLTk3Y2ItN2ExODZlYzkyNzY0

pam.php

<?php

// UPDATE - OFFICIAL PHP PAM SDK NOW HERE - https://github.com/pubnub/php

class access {
    function __construct( $pubkey, $subkey, $seckey ) {
        $this->publish_key   = $pubkey;
        $this->subscribe_key = $subkey;
        $this->secret_key    = $seckey;
    }

    function grant_global( $channel, $read=True, $write=True, $ttl=5 ) {
        /**  Grant GLOBAL Access on a Channel. **/
        return $this->_auth(array(
            "channel" => $channel,
            "r"       => $read  ? 1 : 0,
            "w"       => $write ? 1 : 0,
            "ttl"     => $ttl
        ));
    }

    function grant( $channel, $authkey=False, $read=True, $write=True, $ttl=5 ) {
        /**  Grant Access on a Channel. **/
        return $this->_auth(array(
            "channel" => $channel,
            "auth"    => $authkey,
            "r"       => $read  ? 1 : 0,
            "w"       => $write ? 1 : 0,
            "ttl"     => $ttl
        ));
    }

    function revoke( $channel, $authkey=False, $read=False, $write=False, $ttl=1 ) {
        /**  Revoke Access on a Channel.**/
        return $this->_auth(array(
            "channel" => $channel,
            "auth"    => $authkey,
            "r"       => $read  ? 1 : 0,
            "w"       => $write ? 1 : 0,
            "ttl"     => $ttl
        ));
    }

    function _sign($message) {
        /** Calculate a signature by secret key and message. **/
        return strtr( base64_encode(hash_hmac(
            'sha256',
            utf8_encode($message),
            utf8_encode($this->secret_key),
            true
        )), '+/', '-_' );
    }

    function _auth($query) { 
        /** Issue an authenticated request.**/
        if (!array_key_exists( 'timestamp', $query )) {
            $query['timestamp'] = time();
        }

        ## Global Grant?
        if ((array_key_exists('auth',$query)) && !$query['auth']) { 
            unset($query['auth']);
        }

        ## Construct String to Sign
        $params      = array();
        $sorted_keys = array_keys($query);
        sort($sorted_keys);

        foreach ($sorted_keys as $key) array_push(
            $params,
            $key . "=" . $query[$key]
        );

        $string_to_sign = 
            $this->subscribe_key . "\n" .
            $this->publish_key   . "\n" .
            "grant"              . "\n" .
            implode( "&", $params );

        $signature = $this->_sign($string_to_sign);
        $url       = (
            "https://pubsub.pubnub.com/v1/auth/grant/sub-key/" .
            $this->subscribe_key . "?" .
            implode( "&", $params ) .
            "&signature=" . $signature
        );

        $workspace_curl = curl_init();  
        curl_setopt( $workspace_curl, CURLOPT_SSL_VERIFYPEER, false );
        curl_setopt( $workspace_curl, CURLOPT_RETURNTRANSFER, 1 );
        curl_setopt( $workspace_curl, CURLOPT_URL, $url );
        $result = curl_exec($workspace_curl);
        return $workspace_details =json_decode( $result, true );
    }
}

?>

some-output-example.txt

Array
(   
    [status] => 200
    [message] => Success
    [payload] => Array
        (   
            [channels] => Array
                (   
                    [some-other-channel] => Array
                        (   
                            [r] => 0
                            [w] => 0
                        )

                )

            [subscribe_key] => sub-c-f95db694-6ff9-11e3-9291-02ee2ddab7fe
            [ttl] => 1
            [level] => channel
        )

    [service] => Access Manager
)

Hi thank you for this repo, I have an angular app and I am trying to grant with php and then subscribe with angular. I get a response with the php script but when I try to subscribe with the token through angular I get 403s. Like maronin it works fine in the dev console.
I ajax post to my php script, on success init and subscribe in js. Any ideas?

Edit: Figured out that I was calling init again in the js and overwriting the first init, i have stopped the 403s.