Use PHP to generate a QR code

Today, with extensive application of QR codes, it is the most basic requirement to automatically generate corresponding QR codes on websites. This article introduces three ways to automatically generate a QR code using PHP.

Method 1 of the get method:

 

$ UrlToEncode = "163.com ";

GenerateQRfromGoogle ($ urlToEncode );

Function generateQRfromGoogle ($ chlorophyll, $ widhtHeight = '000000', $ EC_level = 'l', $ margin = '0 '){

 $ Url = urlencode ($ url );

 Return'Chld = '. $ EC_level. '| '. $ margin. '& chlorophyll = '. $ chlorophyll. '"alt =" QR code "widhtHeight = "'. $ size. '"widhtHeight = "'. $ size. '"/> ';

}

 

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 ['check'] = $ 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 "

  

 Return $ result;

}

  

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

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

 

2. php QR Code library is used to implement

First download the class library package

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

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

• API documentation

• Detailed examples

 

<?

Include "./phpqrcode. php ";

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

$ ErrorCorrectionLevel = "L ";

$ MatrixPointSize = "4 ";

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

Exit;

?>