the front end has learned the basic syntax of HTML,CSS,JS, and the back end of PHP. Recently, I want to make a website and need to use a database, so I want to learn to manipulate mysql database through php. Do you have any recommendations for books or v...
Hello as shown in the following picture, the inventory table of the clothing industry like this, how to design the database, the color and size of each order may be different. ...
there are 10 questions in the examination paper, each with a time limit of 6 seconds, and the time automatically jumps to the next question. current idea: every time the examinee answers a question, save the data with session. When you hand in the paper...
http: www.beian.gov.cn porta. I need to put a query function on my website. I don t want to let users know that I found the data here. So I can t link to this address directly on my website. I want to make such a query form interface on my website,...
redis queue lpush rpush inserts the queue without judging the repetition, how to avoid inserting some repetitions? redis has a collection that does not allow repetition. How can the two of them be implemented together? ...
how to time the controller method written by thinkphp5 under the linux server , you can write the bat file under windows, but how to implement it under linux, and, if you run regularly, does it affect the performance of the server < hr > ...
the code flow goes like this: the front end calls wx.checkSession () to determine whether the Sessionkey is invalid. If it fails, call wx.login () and pass the login credential code to the backend. the backend acquires the new Sessionkey, acc...
such as how do online games save the real-time location of user roles and Synchronize? now design a game combined with the actual map database using mongoDB data table with a location field to record the user s current location so that others can ge...
as shown in the figure below, I can catch data when simulating POST. In the past, the idea I used to write was to simulate login, then save Cookie, and then curl to log in with the saved Cookie to obtain data directly, but now the interface has changed....
array(2) { [0] => array(3) { [0] => string(3) "16G" [1] => string(3) "32G" [2] => string(3) "64G" } [1] => array(2) { [0] => string(1) "L" [1] => string(2) "XL&quo...
What s the difference between use PDO; and use PDO; ? I think use PDO; is a PDO class introduced in the root space, so why can use PDO; be introduced successfully? ...
docker is installed in the win10 environment. What if laradock, kills the docker process and restarts today and finds that the database is gone? ...
using Mini Program template message push, looking at the official documents, it seems that can only be sent after the payment is triggered from Mini Program or the form is submitted. However, the business requirement is that you can send message notifi...
$_SERVER["REMOTE_ADDR"] error_reporting (E_ERROR | E_WARNING | E_PARSE); if($HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"]){ $ip = $HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"]; } elseif($HTTP_SERVER_VARS["HTTP_CLIENT_I...
the api interface that Wechat updated recently cannot pop up automatically using wx.getUserInfo s api. only through button s open-type to actively obtain authorization pop-up window is there a way to click on button automatically or is there any oth...
Today, the test site suddenly threw a (failed:net::ERR_COMPLETE_CHUNKED_ENCODING) error, and then the domain name in the web request is like this www.xxx.cc :-Infinity,. What s going on? uses nginx page rendering directly with php ...
want to replace in Quan Lian good real estate Wang Yongping, director of commercial real estate research of the Chamber of Commerce, there are many commercial facilities and great pressure of competition, so it is necessary to use commerce as the en...
I d like to ask about the use of session. if I have a dozen pairs of data in my application, and there are three or four other configuration parameters corresponding to each data, it has to be close to a hundred values. I think it s all saved with ses...
$dishPrice = 0; $dishAmount = 0; $dishPriceV = 0; $dishPrice = $dish->{ price }; $dishAmount = $dish->{ amount }; $dishPriceV += $dishPrice * $dishAmount; print out each box $dishPriceV he will add the above , for exam...
for example, there is a getuid () method in the User model. For example, do I have to instantiate the User model first when I want to use the method in the controller? $user=new User () and then call this $user- > getuid () method? ...
how to mount the folder of the specified server for example, I have a disk address: 10.99.1.33 Special effects Video how to mount to Linux and then access it. ...
how to modify the lable color of el-form in element-ui ...
A web page gets a large amount of data from the backend and stores it in vuex. Other components get data from vuex, but if there is a delay in the network, if it is unable to get the data, it will report an error. Is there any solution? at present, I ...
for example, how to write keep-alive, in app.js but do not want to cache other things except detail,? <keep-alive exclude="detail"> <router-view > < keep-alive> ...
uses HTMLPurifier to Filter a url, in the text but converts a parameter in url, lang, into a full-width less-than sign (similar to ...