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Form value transfer Concept: Form value transfer means that the browser submits the user's selection or input data to the background server language through form elements. Why use forms to transfer values? The characteristic of dynamic website (Web2.0) is that the background customizes data according to the needs of users. The so-called &quo ...

Algorithm and data structure algorithm The algorithm is the core of the program. The quality of the algorithm directly determines the quality of the program Several basic algorithms Binary search Bubble sorting Insert sort Sort selection Quick sort Binary search Assuming that the data is sorted in ascending order, for the given value x, the com ...

environment The process in php is completed in the form of extension. Through these extensions, we can easily complete a series of actions of the process. pcntl extension: the main process extension, which completes the process creation in the waiting operation. posix extension: complete the general api of posix compatible machine, such as ob ...

1. include & require We know that if an A.php file wants to introduce the classes in the B.php file, it needs to introduce B.php through include / require. This method is not a problem for small projects, but for large projects, it usually contains many public files, such as foo / bar / dog PHP, according to the traditional way, we can imp ...

Many small programs have been developed. Each time, we have to turn over the documents and find the previous project to copy it,It takes time and trouble. In order to facilitate the development of small programs, we simply build our own wheels,Integration of small programs (WeChat, QQ, Baidu, byte beating, Alipay) related development. !! Plea ...

Today, when making MailBee series products, I remembered the embarrassing scene of being asked by an interviewer when I went to the interview in 2014. Generally, I recommend using self built smtp email to push small systems. There is still no problem pushing 1000 emails a day; If a small website needs more push volume, Alibaba cloud push inter ...

backgroundMany online topics about redis have talked about avoiding causing large keys, because deletion will block the main thread. I've seen a comment that a large key of 2G was deleted in the test, and the system was blocked for about 80 seconds.I was asked how to delete a big key during an interview.Recently reading redis5 0.8 source code. ...

This article is from qaq Po Yan blog. https://qagzs.com:88/ Joan article / 43 html Before submitting sitemap to Google search engine, I found that Google used xml instead of html, so I wanted to use lazy tools to crawl the xml map that generated sitemap on the Internet Don't ask me why my blog doesn't have an xml map, because the framework fun ...

BossCMSV1.0 code audit preface The article originated in the prophet community BossCMSV1.0 code audit The following vulnerabilities have been submitted to CNVD and included Background arbitrary file upload Add the allowed upload type in the background security settings php Then upload the php Trojan horse file getshell through the attachm ...

Learning record of PSR-[0-4] code specification in php 1. What is PSR? PSR is a set of code writing specifications used to constrain code style. In the past, when there was no standard, everyone wrote code according to their own habits, but everyone's style was different, and your code was very uncomfortable in the eyes of others. And it will ...