PHP ActiveX Requires Chilkat v11.7.0+

Get the QR Code Capabilities of the Chilkat Version in Use

See more QR Code Examples

Demonstrates the capabilities operation, which describes what the installed version of Chilkat can do: the range of QR versions, the error-correction levels, the operations, the image formats and the limits. A program can check for a feature here instead of testing for a Chilkat version number. The request can be an empty JSON object. PHP ActiveX

<?php

$success = 0;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

$json = new COM("Chilkat.JsonObject");
$fmt = new COM("Chilkat.Formats");
$jsonOut = new COM("Chilkat.JsonObject");
$success = $fmt->QrCode('capabilities',$json,$jsonOut);
if ($success == 0) {
    print $fmt->LastErrorText . "\n";
    exit;
}

print 'Chilkat version: ' . $jsonOut->stringOf('productVersion') . "\n";
print 'symbology: ' . $jsonOut->stringOf('symbologies[0].id') . "\n";
print 'QR versions: ' . $jsonOut->IntOf('symbologies[0].encoding.version.min') . ' to ' . $jsonOut->IntOf('symbologies[0].encoding.version.max') . "\n";
print 'structured append, most symbols: ' . $jsonOut->IntOf('symbologies[0].structuredAppend.maxSymbols') . "\n";

$n = $jsonOut->SizeOfArray('symbologies[0].encoding.errorCorrection');
for ($i = 0; $i <= $n - 1; $i++) {
    $jsonOut->I = $i;
    print 'error correction: ' . $jsonOut->stringOf('symbologies[0].encoding.errorCorrection[i]') . "\n";
}

//  The operations this version implements.
$n = $jsonOut->SizeOfArray('operations');
for ($i = 0; $i <= $n - 1; $i++) {
    $jsonOut->I = $i;
    if ($jsonOut->BoolOf('operations[i].available') == 1) {
        print 'operation: ' . $jsonOut->stringOf('operations[i].name') . "\n";
    }

}

$n = $jsonOut->SizeOfArray('imageFormats.output');
for ($i = 0; $i <= $n - 1; $i++) {
    $jsonOut->I = $i;
    print 'image format: ' . $jsonOut->stringOf('imageFormats.output[i]') . "\n";
}

print 'default timeout: ' . $jsonOut->IntOf('limits.timeoutMs.default') . ' ms' . "\n";
print 'default largest image: ' . $jsonOut->IntOf('limits.maxPixels.default') . ' pixels' . "\n";

//  Sample output:

//  Chilkat version: 11.7.0
//  symbology: qr
//  QR versions: 1 to 40
//  structured append, most symbols: 16
//  error correction: auto
//  error correction: L
//  error correction: M
//  error correction: Q
//  error correction: H
//  operation: generate
//  operation: measure
//  operation: validate
//  operation: capabilities
//  image format: png
//  image format: svg
//  default timeout: 10000 ms
//  default largest image: 16777216 pixels

?>