本文实例讲述了php生成二维码时出现中文乱码的解决方法。分享给大家供大家参考。具体分析如下:
最近做了个扫描二维码得到vcard的项目,遇到一个问题,有一部分生成完的二维码,用android系统手机扫描后得到的vcard中的中文姓名是乱码,经过比对发现,这部分vcard中ORG这个类型没有内容,随即判断没内容就加上一个固定的字符串,这样乱码的问题得以解决.
php生成二维码的几种方式
1.google开放api,代码如下:
代码如下:
$urlToEncode="http://www.bitsCN.com";
generateQRfromGoogle($urlToEncode);
function generateQRfromGoogle($chl,$widhtHeight ='150',$EC_level='L',$margin='0')
{
$url = urlencode($url);
echo '';
}
2.php类库PHP QR Code
地址:http://phpqrcode.sourceforge.net/
下载:http://sourceforge.net/projects/phpqrcode/
用例,代码如下:
# 创建一个二维码文件
代码如下:
QRcode::png('code data text', 'filename.png');
# 生成图片到浏览器
代码如下:
QRcode::png('some othertext 1234');
3.libqrencode
地址:http://fukuchi.org/works/qrencode/index.en.html
4.QRcode Perl CGI & PHP scripts
地址:http://www.swetake.com/qr/qr_cgi.html
第2种方法中在二维码中间加上logo,修改phpqrcode.php中的QRimage类里的png方法,代码如下:
代码如下:
public static function png($frame, $filename = false, $pixelPerPoint = 4, $outerFrame = 4, $saveandprint=FALSE, $mergePic='')
{
$image = self::image($frame, $pixelPerPoint, $outerFrame);
if($mergePic) {
$im = imagecreatefrompng($mergePic);
$w = imagesx($im);
$h = imagesy($im);
ImageAlphaBlending($image, true);
ImageAlphaBlending($im, true);
$qrw = (imagesx($image)-$w)/2;
$qrh = (imagesy($image)-$h)/2;
imagecopy($image, $im, $qrw, $qrh, 0, 0, $w, $h);
imagedestroy($im);
}
if ($filename === false) {
Header("Content-type: image/png");
ImagePng($image);
} else {
ImagePng($image, $filename);
if($saveandprint===TRUE){
header("Content-type: image/png");
ImagePng($image);
}
}
ImageDestroy($image);
}
希望本文所述对大家的PHP程序设计有所帮助。

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.

PHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

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.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.

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


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