Why do many people like to use VARCHAR (255) in MySQL?
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Why do many people like to use VARCHAR (255) in MySQL?
1. Historical reasons
varchar only supports 0-255byte before MySQL 5.0.3, only after MySQL 5.0.3 is supported to 0-655
What's the difference between GB18030 and UTF-8?
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What's the difference between GB18030 and UTF-8?
GB18030Is the Chinese standard, GB, is how to represent a character. Unicode only gives the number of a character, and does not
Echo '
The output is empty, considering that it may have been parsed by PHP
But what I want to do is to textare the PHP statement directly back to the results of PHP parsing
Can be implemented with Eval but cannot return any errors,
So I want to
My site has only a layer of variables, similar to/index.php?a=a&b=b, will not appear/index.php?a[a]=aa&a[b]=ab, the number of not more than 2.
But the test is only set to the following to not error:
max_input_nesting_level=2
First of all I think
HTML section:
JS Code:
function preloader(){ // create object imageObj = new Image(); // set image list images = new Array(); images[0]="image1.jpg"; images[1]="image2.jpg";
Last Login:sat Jan 14:35:58 on consoleduncandemini:~ duncan$ CD hhexo.rar homestead/duncandemini:~ duncan$ CD Homes Tead/duncandemini:homestead duncan$ vagrant upbringing machine ' default ' up with ' VirtualBox ' provider...==> default: Box '
, submitted by other pages $_post[' info ' article data to the current page, after the authorization and column validation or judgment, using the content controller's Add method to submit to the database? How should I write?
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,
Now there are two tables, category and article.
Category
/** * @Mapping\Entity * @Mapping\Table(name="category") */class Category{ /** * @Mapping\Id * @Mapping\Column(type="integer") * @Mapping\GeneratedValue(strategy="AUTO") */
Answer questions every time the answer box loses focus, it triggers an event to send a request to the server to save the current inputChange the machine and the browser to get it here.But the cache is erased.Is it because it's _xsrf this cookie to
At present, there is a demand above, is to connect the other side of the Socket.io server, and then receive data and storage.
However, there is currently no PHP version of the Socket.io Client connection code, only the server, so here to request a
How to get the number of full weeks (Monday to weekends) within a period of time what better way PHP has
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How to get the number of full weeks (Monday to weekends) within a period of time what better way PHP has
The amount ...
PHP How to upload large files, configuration as if the maximum set to 8M, I would like to know how to upload a hundreds of m file (do not use specialized client software), it seems to be a shard What, do you know how to do it?
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According to the information on the Internet, post is used to create resources and put to update resources.
Now that the Nginx is built, the put can actually upload the file to the specified location and update the specified file.
So can post
There are strings: ' sdfujer[ema14]xx[emb15],43 you 56^&%^% me [EMC7]] []]
where [EMA14],[EMB15],[EMC7], is the content to be replaced,
' [em ' begins, '] ' ends, the middle consists of letters plus numbers
Replace all of them with this structure,
Recently learning PHP, to the third chapter of the time stuck. I quoted an HTML template, but this template cannot reference a CSS file, which is the HTML template:
Your Website catchy slogan...
Discuz User's home page can see its time zone, background can also set time zone, this is the international route Ah
I'm thinking about it. The whole system is not used for Greenwich Mean time, and then converted to local times based on the user's
Is the cookie useless?
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Is the cookie useless?
No one seems to be talking about the point.
Simply put, the session stores the link state/data on the server side, and the cookie is the link state/data that is recorded on the
Hello everyone, how does the general authority control system do? Rabc,auth Authority authentication?
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Hello everyone, how does the general authority control system do? Rabc,auth Authority authentication?
Do you know, people?
General article paging is limit 20 data about, I do not know why, limit the biggest performance bottleneck where, the biggest value in where, a one-time fetch 5,000 have no problem, 10,000, how much suitable, good not, each page to take 20 too
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