Generate QR code using PHP_PHP tutorial

Introduction: Today, when QR codes are widely used, automatically generating corresponding QR codes in web sites is the most basic requirement. The article introduces three ways to automatically generate QR codes using PHP.

Get method implementation method 1:

$urlToEncode="163.com";

generateQRfromGoogle($urlToEncode);

function generateQRfromGoogle($chl,$widhtHeight ='150',$EC_level='L',$margin='0') {

$url = urlencode($url);

return '';

}

Post method implementation:

$width = 300;

$height = 300;

$string = "163.com";

function qrcode($width,$height,$string)

{

$post_data = array();

$post_data['cht'] = 'qr';

$post_data['chs'] = $width."x".$height;

$post_data['chl'] = $string;

$post_data['choe'] = "UTF-8";

$url = "http://chart.apis.google.com/chart";

$data_Array = array();

foreach($post_data as $key => $value)

{

$data_Array[] = $key.'='.$value;

}

$data = implode("&",$data_Array);

//echo $data;

$ch = curl_init();

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_HEADER, 0);

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_POSTFIELDS,$data);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

$result = curl_exec($ch);

//echo ""; Note that the header is not written

return $result;

}

header("Content-type:image/png");

echo qrcode($width,$height,$string);

2. Use the php class library PHP QR Code to implement

First download the class library package

Address: http://phpqrcode.sourceforge.net/

Download: http://sourceforge.net/projects/phpqrcode/

• API Documentation

• Detailed example

include "./phpqrcode/phpqrcode.php";

$value="http://www.weste.net";

$errorCorrectionLevel = "L";

$matrixPointSize = "4";

QRcode::png($value, false, $errorCorrectionLevel, $matrixPointSize);

exit;

?>