PNG file structure analysis (I: Understand the PNG file storage format)
Preface
We all know that during the development of the mobile phone application program for j2's, we can use images in PNG format (even on some mobile phones, we can only
Two ways to generate QR code using PHP (with logo image) submission: Junjie font: [Increase decrease] type: Reproduced with the progress of science and technology, QR Code application field more and more widely, today I give you to share how to use
This article was reproduced from: http://blog.csdn.net/qq258711519/article/details/7766303One-machine platform Boot logo modification method1: Modify the logo in kernel:If you want to replace the boot logo in the kernel, you just need to replace the
[From making a logo to LCD display or VGA display logo]1. How to Create a logo:First, select a local image. Then, use the gimpsoftware to save the image as. PNG,The conversion method is not mentioned.Then pass the image to a Linux PC, such as
First, using the Google API to generate two-dimensional codeGoogle provides a more complete QR code generation interface, call API interface is very simple, the following is the calling code: $urlToEncode = "Http://www.jb51.net";
First, the use of Google API to generate two-dimensional codeGoogle provides a more complete two-dimensional code generation interface, calling API interface is very simple, the following is the calling code:
$urlToEncode =
First, the class library used
1, Phpqrcode (PHP library)
2. Qrcode.js (JavaScript Library)
Second, the use of Phpqrcode
Only PHP class library, that is, the generation of two-dimensional code in the background operation. Because in the background
One, the use of the class library
1, Phpqrcode (PHP library)
2, Qrcode.js (JavaScript library)
Second, the use of Phpqrcode
Only use PHP's class library, that is, the generation of two-dimensional code in the background operation. Because to
1, Download Phpqrcode class Library2, introduction of QRCode LibraryI use the TP framework, directly download the QRCode library into the TP framework under the core framework of the vendor file, vendor (' Phpqrcode.phpqrcode '); Introduced3, code
Preface
We all know that during the development of the mobile phone application program for j2's, we can use images in PNG format (even on some mobile phones ).Only images in PNG format can be used. Although images can be used to add many highlights
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