PHP cookie names are converted by periods (periods). cookie periods _ PHP Tutorial

PHP cookie names are converted by periods (periods) and cookie periods (periods. PHP cookie names are converted by periods (periods). The title of cookie periods is not very strict. you should say that you can use periods (periods) for cookie names, but they will be converted. you name a cookie: $ _ COOK php cookie names are converted by periods (periods) and cookie periods (periods)

This title is not very strict. it should be said that you can use the cookie name of the dot number, but it will be converted. you name a cookie:

$ _ COOKIE ['My. name'] = 1;

In fact, you cannot find this value in the cookie through 'My. name'. it can only be 'My _ name ':

Echo $ _ COOKIE ['My _ name'];

Php has automatically converted to underline.

Why does php do this? This is because $ _ GET/$ _ POST/$ _ SERVER/$ _ COOKIE... In many previous versions, the values of these global functions can be directly accessed locally using the register_globals parameter. for example, after register_globals = on is enabled, the value of $ my_name for access is 1. If it is $ my. name, it does not comply with the naming principles of php variables. this is not just a problem of periods.

Therefore, the $ _ COOKIE name complies with the php naming standard.

In addition, enabling register_globals is a bad decision, because it may overwrite the original value in the script, for example:

// Other code
If ($)
$ Uc_is_login = true;
//...

The user only needs to send a url? A = 1 http request can be logged in by default. This is a very dangerous practice and should be disabled. In fact, php6 has removed this option.

What is the quick conversion method between periods and periods?

I often use it like this. Haha. You asked the person

Chinese status

On the keyboard. It can end with a full stop. DEL on the keypad is an English point. Very convenient

Why does a period change to a period?

Press ctrl, and then press "> ].
In this way, you can enter punctuation to see if it is a Chinese punctuation.

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