The difference between the header setting cookie and the built-in Setcookie in PHP

First of all, the browsing of the cookie operation is through the HTTP header (commonly known as "HTTP Header") to achieve. All cookie data transfer between server and client is done via HTTP request header.

PHP Setcookie (The implementation of the function) is to encapsulate the HTTP header, which seems to use the header and the use of Setcookie is the same.

Because header information belongs to the HTTP protocol content, you must first send the head information to the server, and then perform other operations such as data download, so there can be no content output before Setcookie and header (for example: echo/printf, etc.)

Header Set Cookie mode:

1	Header("Set-cookie:testcookie= Chinese; path=/; domain=.sunphp.org; Expires= ".Gmstrftime("%A,%d-%b-%y%h:%m:%s GMT",Time() +9600) ) ;

Setcookie Setup mode:
Syntax: Setcookie (name,value,expire,path,domain,secure)
Cases:

1	Setcookie("Website",' Www.sunphp.org ',Time()+3600*24) ;

Parameters	Description
Name	Necessary. Specifies the name of the cookie.
Value	Necessary. Specifies the value of the cookie.
Expire	Optional. Specify the validity period of the cookie.
Path	Optional. Specifies the server path of the cookie.
Domain	Optional. Specifies the domain name of the cookie.
Secure	Optional. Specifies whether to transfer cookies through a secure HTTPS connection.

The difference between the header setting cookie and the built-in Setcookie in PHP