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problem description there are hundreds of devices, and each device produces some real-time data every second. These data will be analyzed and used later. What is the best way to store these data? the environmental background of the problems and what...
the following array wid and gid are the same, requiring Num accumulation, different operations are directly displayed, how to achieve array deduplication? $arr = array( array( wid => 1, ...
at first, there was a forum website, but later, when users got up, they wanted to be an e-commerce station, using different domain names, deployed on two servers respectively, and directly using the original user data. Now I hope that the two websites sh...
when you encounter new tasks and daily tasks when doing an APP interface function, it is reasonable to write in the background. It is wrong to ask if you have done a task every time you do it. For example, if you want to check whether you have comple...
simplify the question what PHP framework is available also supports the following functions: supports http access supports socket communication the data obtained by the controller (logic processing part) are data types parsed by the framewor...
after installing vtiger7 successfully, no configuration is successful. How to configure it with help from Daniel? ...
problem description is it appropriate to use php for the products of the mall? is there any appropriate language to recommend ...
how does php shield fatal error (fatal errors)? in other words, the system can do other things by using php programs to handle shielded fatal errors, report errors in time, and don t show them to users. ...
I have encountered some bottlenecks recently. I always feel that I don t know how to improve my level. I want to see what level you think the three-year php should have ...
js exports Excel by splicing table, but there are more than 50, 000 rows of data. A network error occurs when you click to download. When the amount of data is small, download normally code as follows: < script > var idTmr; function getExplorer() {...
Wechat refund. The refund is successful but does not go through the callback. The callback address is accessible ....
originally, the browser automatically jumped to phpstorm when it was executed, but now it can t be captured all the time. ...
gitlab is installed in the pagoda panel. After installation, visit the URL of gitlab and register an account. After logging in, you find that it is not the default administrator account. Where is the default administrator account? ...
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the official account Token of Wechat is verified successfully, but the message sent by the official account cannot be received in the callback ...
problem description customer table users has the following fields: there are 5 sales groups. Each sales group imports at least one batch of 100000 items of data into the table every month, and can only import the data of its own sales group ...
php uses tcpdf, and the pdf file generated by html is misplaced in the contract seal. What do you need to do? 1. Typesetting under html is correct, as shown in figure 2html 3pdf I don t know what the problem is and how to solve it? ...
have you ever encountered a packaged static file uploaded to the server and accessed normally for the first time, but it is also normal for the route to jump to other pages, that is, it stays on other routing pages, and F5 refresh cannot be found directl...
several questions about source configuration. Assume that the configured source has the following sql_query = SELECT id, group_id, UNIX_TIMESTAMP(date_added) AS date_added, title, content FROM documents 1) all non-full-text se...
I use the vuescroll component, https: codepen.io wangyi7099., and then modify the parameters according to the document http: vuescrolljs.yvescoding. on the official website. The console has no effect. What is the reason? ...
problem description: use php to collect data from foreign websites for testing. The data is saved in txt format and stored on the server. When you need to access it, use php to read the data in txt and return it to the user. when the server is running...
globally, there is an event to be called by default, but before calling, it is necessary to determine whether the subcomponent is set separately. If it is set, use the subcomponent, and if there is no global event by default, think about it and find the ...
quote Tencent Map in the vue project, use the navigator.geolocation.getCurrentPosition of H5 to obtain the coordinates, and then convert the coordinates into Tencent coordinates. According to Tencent s document, I wrote as follows: TMap( WQCBZ-4F...
it is possible to use file: android_asset images default.png to access pictures in index.vue, but other created vue pages cannot display pictures with this path. Later, I built a picture server with nginx. In other vue pages, I changed the address of sr...