CODEWITHSUNDEEP
phpcookies
James
James

Reputation: 13

How to alter a cookie in php

I want to store a string in a cookie of the form 

 1.236|2.48|3.574|4.094|

Each number 1-4 correlates to a div and the number after the dot correlates to a property of the div.

What I want to do is for php to examine the cookie and see if there is an entry for div 3 and if there is, remove the number after the dot and replace it by a number I supply and if not, create an entry in the string with the number I supply. So if the string in the cookie was of the form 

 1.236|2.48|4.094|

Then the php would set it to

 1.236|2.48|4.094|3.66|

with 66 being the number supplied by the script.

And if the string in the cookie was of the form

 1.236|2.48|3.574|4.094|

then the php would set it to

 1.236|2.48|3.66|4.094|

(or just as good would be:

 1.236|2.48|4.094|3.66

)

I have used dots and '|' in my example but they are just as placeholders to separate the data, if they can't be used in a cookie then any other random fixed symbol should do.

Any help appreciated. Thanks.

Upvotes: 1

Views: 171

Answers (2)

dkruythoff
dkruythoff

Reputation: 361

$cookieName = 'myCookie';
$newValue = 66;
$newString = preg_replace('/3\.[0-9]+/',"3.$newValue",$_COOKIE[$cookieName]);
if (strpos($newString,'3.'.$newValue) === false) {
    $newString .= '3.'.$newValue;
}
setcookie($cookieName,$newString);

Upvotes: 0

Tadeck
Tadeck

Reputation: 137380

Use setcookie() function (see documentation) to set and $_COOKIE array (see documentation) to read cookies.

Upvotes: 3

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