PHP制作中间带logo的二维码代码
PHP制作生成中间加头像的二维码代码
QRCode码是由Denso公司于1994年9月研制的一种矩阵二维码符号,微信平台的火爆带动二维码在互联网行业的广泛应用。
最近皮皮精灵自媒体平台也为每篇文章提供二维码服务,用户扫一下文章对应的二维码,就可以在手机上预览文章内容,并且可以通过微信客户端分享自己的文章。而对二维码的应用我们还不仅仅是每篇文章,而是希望通过二维码更好的推广自媒体品牌,提升它的影响力。
在二维码中间加上用户的头像,是微信平台的做法,在查了相关的资料后,并没有这方面的介绍,不过通过不断的测试,快乐男孩也寻找到了解决这个问题的办法,下面给大家分享一下。
二维码生成的方法有许多人介绍php类库PHP QR Code,下载到最新版本:http://sourceforge.net/projects/phpqrcode/ 或 http://pan.baidu.com/s/1hqDrLgo。
解压后,只需要使用phpqrcode.php文件即可,程序代码如下:
public function qrcode($url ) { require_once FCPATH . 'application/third_party/phpqrcode.php'; QRcode::png($url); }
这样就可以生成二维码了,实际上在png这个方法里还有几个参数需要使用。
第一个参数$text,就是上面代码里的URL网址参数,
第二个参数$outfile默认为否,不生成文件,只将二维码图片返回,否则需要给出存放生成二维码图片的路径
第三个参数$level默认为L,这个参数可传递的值分别是 L(QR_ECLEVEL_L,7%),M(QR_ECLEVEL_M,15%),Q(QR_ECLEVEL_Q,25%),H(QR_ECLEVEL_H,30%)。 这个参数控制二维码容错率,不同的参数表示二维码可被覆盖的区域百分比。
利用二维维码的容错率,我们可以将头像放置在生成的二维码图片任何区域。
第四个参数$size,控制生成图片的大小,默认为4
第五个参数$margin,控制生成二维码的空白区域大小
第六个参数$saveandprint,保存二维码图片并显示出来,$outfile必须传递图片路径。
加头像的方式有两种,一种是修改phpqrcode.php这个文件,并在增加png这个方法中增加头像地址的参数,快乐男孩不建议这么做,以后 phpqrcode.php如果需要升级,会相当的不便,因此采用另一种方法,在调用png方法并返回图片后,再处理头像图片,将头像放在二维码图片上 面,这部分细节就不再详述了。

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics











There are four main error types in PHP: 1.Notice: the slightest, will not interrupt the program, such as accessing undefined variables; 2. Warning: serious than Notice, will not terminate the program, such as containing no files; 3. FatalError: the most serious, will terminate the program, such as calling no function; 4. ParseError: syntax error, will prevent the program from being executed, such as forgetting to add the end tag.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

HTTP request methods include GET, POST, PUT and DELETE, which are used to obtain, submit, update and delete resources respectively. 1. The GET method is used to obtain resources and is suitable for read operations. 2. The POST method is used to submit data and is often used to create new resources. 3. The PUT method is used to update resources and is suitable for complete updates. 4. The DELETE method is used to delete resources and is suitable for deletion operations.

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

In PHPOOP, self:: refers to the current class, parent:: refers to the parent class, static:: is used for late static binding. 1.self:: is used for static method and constant calls, but does not support late static binding. 2.parent:: is used for subclasses to call parent class methods, and private methods cannot be accessed. 3.static:: supports late static binding, suitable for inheritance and polymorphism, but may affect the readability of the code.

PHP handles file uploads through the $\_FILES variable. The methods to ensure security include: 1. Check upload errors, 2. Verify file type and size, 3. Prevent file overwriting, 4. Move files to a permanent storage location.
