PHP ActiveX Requires Chilkat v11.7.0+

Create a Wi-Fi QR Code

Demonstrates a QR code that joins a phone to a Wi-Fi network when scanned. A QR code only holds text. Phones recognize text of the form WIFI:T:;S:;P:;; and offer to join the network. T is WPA (also used for WPA2 and WPA3), WEP, or nopass for an open network, and H:true can be added for a hidden network. In the name and the password, the characters backslash, semicolon, comma, colon and double quote must each be preceded by a backslash.

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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");
$json->UpdateString('payload.text','WIFI:T:WPA;S:Chilkat Guest;P:correct-horse-battery-staple;;');

//  Level Q, so that the code still scans when it is printed small or gets worn.
$json->UpdateString('encoding.qr.errorCorrection','Q');
$json->UpdateInt('render.moduleSize',8);

//  Say which network it is under the code.
$json->UpdateBool('render.text.enabled',1);
$json->UpdateString('render.text.value','Wi-Fi: Chilkat Guest');
$json->UpdateInt('render.text.scale',2);

$json->UpdateString('output.path','qa_output/qr_wifi.png');
$json->UpdateBool('output.overwrite',1);
$json->UpdateString('output.return','none');

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

print 'file: ' . $jsonOut->stringOf('outputs[0].path') . "\n";
print 'QR version: ' . $jsonOut->IntOf('symbols[0].selectedEncoding.version') . "\n";
print 'image: ' . $jsonOut->IntOf('outputs[0].width') . ' x ' . $jsonOut->IntOf('outputs[0].height') . ' pixels' . "\n";

//  The image written to qa_output/qr_wifi.png:

//  

//  Sample output:

//  file: qa_output/qr_wifi.png
//  QR version: 5
//  image: 360 x 374 pixels

?>