What is $_COOKIE in PHP ?
Cookies in PHP ( $_COOKIE [] )is a superglobal variable used to handel cookie . A cookie is a small file that the server embeds on the user\’s computer. Each time the same computer requests a page with a browser, it will send the cookie too. With PHP, you can both create and retrieve cookie values.To Retrieve the values of cookie we use $_COOKIE .
Syntax : $variable = $_COOKIE [‘SomeKey’];
Where as a cookie is created with the setcookie() function.
Cookie in PHP with examples
To create Cookie:
setcookie(\"SomeKey\",\"KeyValue\",time()+$int);
name is your cookie\'s name
value is cookie\'s value
$int is time of cookie expires Fetch Cookie:
echo $_COOKIE[\"SomeKey\"];
Updating Cookie:
setcookie(\"color\",\"red\");
echo $_COOKIE[\"color\"];
/*color is red*/
/* your codes and functions*/
setcookie(\"color\",\"blue\");
echo $_COOKIE[\"color\"];
/*new color is blue*/
UNSET cookie in PHP
Deleting Cookie
* unset($_COOKIE[\”KeyName\”]);
* setcookie(\”SomeKey\”,\”KeyValue\”,time()-1);
it expired ie. it\’s deleted