PHP Shopping Cart Class

PHP Shopping Cart class:

Because only the type of the product is recorded in the requirement, there is also the number ... Like food, and then what number, this looks like. So there is no record of the number of products. You need to use the improvement on the line.

　　

Setcookie ("Cart", "s:26,45,4,4523423|d:17,7,27,26|e:12,13,123,43|f:34");

Cartadd (' e ', ' 167 ');

Getproinfo (' z ');

Delproinfo (' F ', ' 26 ');

/**

* ***********

* Class for recording, modifying, deleting cookies, changes to local information for my plan

* Liquan

*/

Class Cart

{

/*

Realization of cookies Shopping cart

@type Product Type

@id Product number

The result of cookies is type1:3,45,23|type2:34,234,34|type3:344,124

*/

function Cartadd (type,id)

{

If you use it for the first time, reset the cookies

if (!isset (_cookie["cart"))

{

Setcookie ("cart", type. ":". id);

}

Else

{

If it's not the first time, take it out first.

cartstr=_cookie["cart"];

Separate the results.

Cartarray=split ("|", CARTSTR);

Used to determine whether a type exists, does not exist initially, is zero

istype=0;

Product Number List

Id_list;

Recycling Products

for (i=0;i

{

Get product name and product number list

List (carttype,product) =split (":", Cartarray[i]);

If the existing product and the Hsiang to be saved, change the Istype to 1, indicating that the product already exists

if (Type==carttype)

{

istype=1;

Get a numbered list of products

Id_list=product;

Interrupt loop

break;

}

}

If the product does not exist

if (istype==0)

{

Add new products and products to cookies

Cartstr=cartstr. "|". Type. ":". Id;

}

Else

{

Separate the product list into groups

Id_list=split (",", id_list);

Identifies whether the yield number exists and does not initially exist

Isid=0;

Recycle Product number

for (i=0;i

{

If the product number you want to save already exists

if (Id==id_list[i])

{

Identity already exists. Exit loop

isid=1;

Break

}

}

Here only to do product type and product number, so the same no amount, directly ignore

If the product number of the related type does not exist, add a new number

if (isid!=1)

{

Cartstr=str_replace (type. ":", type. ":". Id. ",", cartstr);

Cartstr=str_replace (' d: ', ' d:2, ', cartstr);

}

}

Setcookie ("cart", cartstr);

Print_r (_cookie["cart"));

Setcookie ("Cart", "", Time ()-100);

}

return;

}

Return to the appropriate product list

/*

@type Product Type

*/

function Getproinfo (type)

{

Get Shopping cart Cookies

cartstr=_cookie["cart"];

Match cookies character, get product list

Preg_str=type. ":( (d+),) * (d+) ";

echo "
";

Preg_match ("/". Preg_str.) /", CARTSTR,PROSTR);

Echo Prostr[0];

Exit ();

List (protype,product) =split (":", prostr[0]);

return product;

Pro_list=split (",", product);

Back to Product List

return pro_list;

Print_r (pro_list);

}

/*

* Delete Product

* @type Product Type name

* @id Product number

*/

function Delproinfo (type,id)

{

Get Shopping cart Cookies

cartstr=_cookie["cart"];

Match cookies character, get product list

Preg_str=type. ":( (d+),) * (d+) ";

echo "
";

Preg_match ("/". Preg_str.) /i ", cartstr,prostr);

Do the following if you can find the type you want to delete

if (PROSTR)

{

Is there an ID to delete in the type of query deletion?

Isproid=strstr (Prostr[0],id);

If so, do the following

if (isproid)

{

Updated product string

UPPROSTR;

Updated cookies characters for all the latest products

NEWCARTSTR;

Query whether the product you want to delete has more than one

Preg_match ("/,/", prostr[0],isend);

If so, do the following

if (isend)

{

Find out if there is a product behind the product you want to delete

Preg_match ("/". Id. ",/", Prostr[0],isdot);

If so, delete the following comma

if (Isdot)

{

Upprostr=str_replace (ID. ",", "", prostr[0]);

}

If not, delete the preceding comma

Else

{

Upprostr=str_replace (",". ID, "", prostr[0]);

}

Update the string to insert inside the cookie

Newcartstr=str_replace (PROSTR[0],UPPROSTR,CARTSTR);

}

If there are not more than one, delete the product directly

Else

{

Determine if there are any products behind this product

Preg_match ("/". prostr[0]. "| /", CARTSTR,ISSU);

If it does, delete the following separator

if (ISSU)

{

Newcartstr=str_replace (prostr[0]. "|", "", cartstr);

}

If not, delete the preceding separator

Else

{

Newcartstr=str_replace ("|"). Prostr[0], "", cartstr);

}

}

Setcookie ("cart", newcartstr);

}

}

}

function Deletecart ()

{

Setcookie ("Cart", "", Time ()-100);

}

}

?>