Php QR code generation methods

Php generates two-dimensional codes in several ways, which are easy to use and have been tested.

Php generates two-dimensional codes in several ways, which are easy to use and have been tested.
1. open interfaces using google
Method 1 of the get method:
 

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1. // Brief description of api parameters
2. // Choe is encoded. the default value is UTF-8.
3. // Use post to send data larger than 2 k
4. /*
5. Chld error handling
6. L: by default, 7% data loss can be restored.
7. M: 15% allowed
8. Q: 25% allowed
9. H: 30% allowed
10. */
11. $ UrlToEncode = "http://9streets.cn ";
12. GenerateQRfromGoogle ($ urlToEncode );
13. Function generateQRfromGoogle ($ chlorophyll, $ widhtHeight = '000000', $ EC_level = 'l', $ margin = '0 ')
14. {
15. $ Url = urlencode ($ url );
16. Echo '. $ widhtHeight. 'X '. $ widhtHeight. '& cht = qr & chld = '. $ EC_level. '| '. $ margin. '& chlorophyll = '. $ chlorophyll. '"alt =" QR code "widhtHeight = "'. $ size. '"widhtHeight = "'. $ size. '"/> ';
17. }

Post method implementation:
 

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1. $ Width = 300;
2. $ Height = 300;
3. $ String = "";
4. Function qrcode ($ width, $ height, $ string)
5. {
6. $ Post_data = array ();
7. $ Post_data ['cht'] = 'QR ';
8. $ Post_data ['chs '] = $ width. "x". $ height;
9. $ Post_data ['check'] = $ string;
10. $ Post_data ['choe'] = "UTF-8 ";
11. $ Url = "http://chart.apis.google.com/chart ";
12. $ Data_Array = array ();
13. Foreach ($ post_data as $ key => $ value)
14. {
15. $ Data_Array [] = $ key. '='. $ value;
16. }
17. $ Data = implode ("&", $ data_Array );
18. // Echo $ data;
19. $ Ch = curl_init ();
20. Curl_setopt ($ ch, CURLOPT_POST, 1 );
21. Curl_setopt ($ ch, CURLOPT_HEADER, 0 );
22. Curl_setopt ($ ch, CURLOPT_URL, $ url );
23. Curl_setopt ($ ch, CURLOPT_POSTFIELDS, $ data );
24. Curl_setopt ($ ch, CURLOPT_RETURNTRANSFER, 1 );
25. $ Result = curl_exec ($ ch );
27. // Echo ""; note that the header is not written.
29. Return $ result;
30. }
32. Header ("Content-type: image/png ");
33. 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/
 

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2. Include "./phpqrcode. php ";
3. $ Value = "http://www.weste.net ";
4. $ ErrorCorrectionLevel = "L ";
5. $ MatrixPointSize = "4 ";
6. QRcode: png ($ value, false, $ errorCorrectionLevel, $ matrixPointSize );
7. Exit;
8. ?>