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PC/SC for PHP

About

This is the only extension for using PC/SC based smart cards with PHP. It is a wrapper to the wonderful and free project by Ludovic Rousseau, PCSC-Lite, which is the middleware to access a smart card using SCard API (PC/SC). Since PCSC-Lite is compatible to the winscard API it should be possible to compile this extension using a Windows or macOS operating system.

Thanks are going to Johann Dantant! He provided a PC/SC extension for PHP since 2005 and I reused some of his code. He allowed me to relicense these parts under the terms of the PHP license so I could integrate PCSC-Lite native into PHP.

Installation

I recommend to install the PECL extension the "PHP" way:

pecl install pcsc-beta

You can install the latest code by downloading the sources and compile yourself too.

git clone https://github.com/pcsc-for-php/pcsc.git
cd pcsc
phpize
./configure
make
make install

After that you have all needed files in ./modules/ .

API

The extension currently provides the following API:

scard_establish_context();

Returns the application $context to the PC/SC resource manager.

scard_is_valid_context($context);

Returns TRUE if $context is valid or FALSE if $context is not valid.

scard_release_context($context);

Releases the application $context.

scard_list_readers($context);

Returns an array of available readers or FALSE.

Example:

array(3) {
  [0]=>
  string(26) "OMNIKEY CardMan 5x21 00 00"
  [1]=>
  string(26) "OMNIKEY CardMan 5x21 00 01"
  [2]=>
  string(76) "SCL01x Contactless Reader [SCL01x Contactless Reader] (21161009200722) 00 00"
}

scard_connect($context, "OMNIKEY CardMan 5x21 00 00" [, int $protocol]);

Connects to a card. Returns the $connection to a reader or FALSE.

Where optional $protocol is:

  • 1 = T=0
  • 2 = T=1

Default $protocol is T=1.

scard_reconnect($connection);

Returns the $connection to a reader or FALSE.

NOT IMPLEMENTED! Should be available.

scard_disconnect($connection);

Disconnects the $connection to a card. Returns the TRUE if disconnecting was succesful or FALSE.

scard_transmit($connection, $apdu);

Returns the response $apdu as string or FALSE.

scard_status($connection);

Returns the status array or FALSE.

Example:

array(7) {
  ["state"]=>
  int(52)
  ["SCARD_PRESENT"]=>
  int(1)
  ["SCARD_POWERED"]=>
  int(1)
  ["SCARD_NEGOTIABLE"]=>
  int(1)
  ["SCARD_PROTOCOL_T0"]=>
  int(1)
  ["PROTOCOL"]=>
  string(3) "T=1"
  ["ATR"]=>
  string(28) "3B8980014A434F5033315632324A"
}

scard_cancel($context);

NOT IMPLEMENTED! Maybe not useful because of this extension is for server side usage designed but since we want the API implemented it should be available.

License

This code is licensed under the terms of the PHP License version 3.01. PCSC-Lite is licensed in a way where it is possible to integrate it native in the PHP environment.

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