Comparing 3 strings

condoug

I need to compare 3 strings and ensure at least 2 of them are identical.

Does anyone have a quick solution or aware of a PHP function which will achieve this?

An example would be as follows:

String1
String2
String3

My comparison function would need to throw an error using the above example.

String 4
String 5
String 5

My comparison function would not throw an error in the above example.

It's probably simpler than I think but I have brain block today.

Ta muchly for any advice.

bradgrafelman

A one-line if() statement would take care of this... what have you tried? Just do an if() statement to see if string #1 equals string #2 OR string #1 equals string #3 OR string #2 equals string #3.

condoug

OK, I think I should have elaborated my probelm a little bit more, so here goes:

I have an array as such:

Array
(
    [merchantid1] => KrisCo-7008651
    [merchantprice1] => 1.99
    [merchantid2] => KrisCo-2714258
    [merchantprice2] => 2.99
    [merchantid3] => KrisCo-2714258
    [merchantprice3] => 5
)

What I need is to figure out a way to loop through the array and add the price values together where the merchant values are the same within the array.

So in the example above, the final outcome would be something like:

$merchant1 = "KrisCo-7008651";
$merchant1_total_price = "1.99";

$merchant2 = "KrisCo-2714258";
$merchant_total_price = "7.99";

How can I achieve this?

Many Thanks

bradgrafelman

How is the array being constructed in the first place? Seems like a slight structure change would make what you're trying to do irrelevant (e.g. if you use the id value is the array key, you could just use [man]isset/man or [man]array_key_exists/man to check if that element exists already and, if so, add the current price to the previous value already in the array).