Using PHP to generate two-dimensional code _php tutorial

Introduction: In the two-dimensional code widely used today, in the Web site automatically generate the corresponding QR code is the most basic requirements. This article describes three ways to automatically generate two-dimensional code using PHP.

Get method Implementation method one:

$urlToEncode = "163.com";

Generateqrfromgoogle ($urlToEncode);

function Generateqrfromgoogle ($chl, $widhtHeight = ' Max ', $EC _level= ' L ', $margin = ' 0 ') {

$url = UrlEncode ($url );

return ' chld= '. $EC _level. ' | '. $margin. ' &chl= '. $chl. ' "alt=" QR Code "widhtheight=" '. $size. ' widhtheight= ' '. $size. ' /> ';

}

How to implement the Post method:

$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 you do not write the header

return $result;

}

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

Echo QRCode ($width, $height, $string);

2. Use PHP library PHP QR code to achieve

First download the Class library package

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

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

• API documentation

• A detailed example

Include "./phpqrcode/phpqrcode.php";

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

$errorCorrectionLevel = "L";

$matrixPointSize = "4";

QRCode::p ng ($value, False, $errorCorrectionLevel, $matrixPointSize);

Exit

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