PHP ActiveX Requires Chilkat v11.7.0+

Validate a QR Code Request

See more QR Code Examples

Demonstrates the validate operation, which examines a request without producing anything. The scope says how far to look: definition checks the options, capacity also checks that the data fits a QR symbol, and layout also checks the rendered size against the limits. The response has a validationStatus of valid or invalid, a list of checks, and findings[] describing what is wrong. A request that cannot be understood at all, such as one with a misspelled option, still makes the call fail in the usual way. PHP ActiveX

<?php

$success = 0;

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

$fmt = new COM("Chilkat.Formats");
$jsonOut = new COM("Chilkat.JsonObject");

$json = new COM("Chilkat.JsonObject");
$json->UpdateString('target','symbol');
$json->UpdateString('validation.scope','capacity');
$json->UpdateString('payload.text','https://www.chilkatsoft.com/barcode_overview.asp');

$success = $fmt->QrCode('validate',$json,$jsonOut);
if ($success == 0) {
    print $fmt->LastErrorText . "\n";
    exit;
}

print 'status: ' . $jsonOut->stringOf('validationStatus') . "\n";
$n = $jsonOut->SizeOfArray('checks');
for ($i = 0; $i <= $n - 1; $i++) {
    $jsonOut->I = $i;
    print '  ' . $jsonOut->stringOf('checks[i].name') . ': ' . $jsonOut->stringOf('checks[i].status') . "\n";
}

//  The same text does not fit version 2 at error-correction level H.
$json->UpdateInt('encoding.qr.maxVersion',2);
$json->UpdateString('encoding.qr.errorCorrection','H');

$success = $fmt->QrCode('validate',$json,$jsonOut);
if ($success == 0) {
    print $fmt->LastErrorText . "\n";
    exit;
}

print 'status: ' . $jsonOut->stringOf('validationStatus') . "\n";
$n = $jsonOut->SizeOfArray('checks');
for ($i = 0; $i <= $n - 1; $i++) {
    $jsonOut->I = $i;
    print '  ' . $jsonOut->stringOf('checks[i].name') . ': ' . $jsonOut->stringOf('checks[i].status') . "\n";
}

$n = $jsonOut->SizeOfArray('findings');
for ($i = 0; $i <= $n - 1; $i++) {
    $jsonOut->I = $i;
    print 'finding: ' . $jsonOut->stringOf('findings[i].code') . ' at ' . $jsonOut->stringOf('findings[i].path') . "\n";
    print '  ' . $jsonOut->stringOf('findings[i].message') . "\n";
}

//  Sample output:

//  status: valid
//    definition: passed
//    capacity: passed
//    layout: notApplicable
//  status: invalid
//    definition: passed
//    capacity: failed
//    layout: notApplicable
//  finding: capacityExceeded at /payload
//    the payload does not fit any admitted QR version at the selected error-correction level

?>