带有PHP5的PC / SC，带有wampServer的Windows

Question

I'm trying to read public data from smartCard with wampServer, PHP 5.4, winSCard and php_pcsc.dll for PHP5 (http://pecl.php.net/package/pcsc/0.2/windows).

I found this project http://hanez.org/pcsc-for-php.html (code is for php4 but my dll is for php5) and tried to do in localhost but php throws me this error "Call to undefined function SCardListReaders()".

When I see de phpinfo I can see the extension enabled but it hasn't any information (I can't put images because I haven't points), only has table headers

      PC/SC

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| PC/SC support | enabled |

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Thank you

Answer 1

You may be getting an error because the function is actually scard_list_readers() not SCardListReaders() as the error shows in your post.

But before you can use most of the functions, you need to establish a context first.

Try:

$context = scard_establish_context();
$readers = scard_list_readers($context);

print_r($readers);

// then when you have your card reader's identity from $readers

$connection = scard_connect($context, 'YOUR CARD READER HERE');
$response   =  scard_transmit($connection, 'pdu string');