PHP解压函数gzdecode和gzinflate使用方法技术
maybe yes 发表于2015-01-21 00:11
PHP 5.4 之后新增的 gzip 解压函数 gzdecode 使用方法,gzdecode ? Decodes a gzip compressed string,解压一个使用 gzip 压缩的字符串,这是官网手册上面写到的。
目前很多的空间服务商的 PHP 版本都没有达到 5.4 ,这也导致使用此函数之后发生函数未定义错误,该如何解决这个问题呢?PHP 官方网站用户提交的日志中有人给出了很好的解决方案,使用 gzinflate 函数代替,代码参考如下:
<?phpif (!function_exists('gzdecode')) { function gzdecode($data) { return gzinflate(substr($data,10,-8)); }}
gzinflate 函数的功能大致和 gzdecode 相似,在返回值的注解中官方给出了一句提示“The function will return an error if the uncompressed data is more than 32768 times the length of the compressed input data or more than the optional parameter length. ”。
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PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

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.

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