PHP Cookies are used to store small amount of information on browser than can be used later for different purposes. We will use PHP Cookies to remember user details. You can find HTML form code in page1.php & set/delete cookies on page2.php 1) We will create a form with username & password fields. Dec 04, 2018 Make cookie secure using PHP.ini if you have the permission to access php.ini you can open and add below code at the end of php.ini to make your cookie secure and httponly session.cookiehttponly=On session.cookiesecure=On Method 2.
Cookies are small piece of data stored on the client browser.
More about PHP Cookies:
- Unlike normal variables, cookies data can be maintained for long time in browser, even after you close the browser.
- Cookies are stored on browser level. Therefore, when a cookie created on one browser, it can be accessed on the same browser only.
- PHP provides
setcookie()function to create or delete cookies. Data stored in Cookies can be accessed by
Use of PHP Cookies
- Cookies are also used to store user preferences such as website language or color theme. For example: User can be asked to select a color theme for website layout & Then we can store that as a cookies data user preferences.
- Most of the advertisement platforms (such as Google & Amazon) access user cookies data to show them advertisement as per their person choice or based on geographical area.
How Cookies works
When a user fetch web page with a browser, some cookies can be created and stored on that browser by PHP. Now each time when user request a page with the same browser, it will send the cookie too.
Therefore, based on cookies data available, some special information can be sent to user. This special information can be advertisement, user language or color preference or remembering user login and password.
Create a Cookie
setcookie() function to set a cookie. This function can take upto six arguments. This function should be called before tag. One PHP
setcookie() can store single piece of information. Therefore, you need to call same function multiple times to store multiple data.
setcookie(name, value, expire, path, domain, secure, httponly);
Here is the Detail of All the Arguments
Create a Cookie
Run : http://ideone.com/XlN3Vg
Modify a Cookie Value
To modify a cookie, just set (again) the cookie using the
Run : http://ideone.com/3ftj9R
Delete a Cookie
To delete a cookie, use the
setcookie() function with an expiration date in the past.
Run : http://ideone.com/Slzpfj
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|Difference Between Cookies and Session|
(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)
$_COOKIE — HTTP Cookies
An associative array of variables passed to the current script via HTTP Cookies.
Example #1 $_COOKIE example
echo 'Hello ' . htmlspecialchars($_COOKIE['name']) . '!';
The above example will outputsomething similar to:
This is a 'superglobal', orautomatic global, variable. This simply means that it is available inall scopes throughout a script. There is no need to doglobal $variable; to access it within functions or methods.
- setcookie() - Send a cookie
To clarify the previously posted note:
Dots (.) and spaces ( ) in cookie names are being replaced with underscores (_).
beware, dots (.) in cookie names are replaces by underscores (_)
Php Cookie Examplealexander-schranz at NO_SPAM dot hotmail dot com ¶
Cookies with the same name the first cookie is used. Clients will send cookies with longer path before cookies with shorter path. This comes from RFC 6265 which says 'Cookies with longer paths are listed before cookies with shorter paths.'. So you get the best matching cookie for your current request.
- Predefined Variables