Case sensitive issue!?

[chiprivers]

I am creating a very simple site to be able to sell just one product.  On the checkout screen I have a input box for the user to be able to enter any promotional code they may have been given.  The user can recalculate their purchase total using the entered code but at present when the script checks the code it is comparing it case sensitively but I want it to be case insensitive.

 

I am using:

 

if ($entered_code == $required_code) {...

 

How can I can alter this so that it is not checking the case of the letters entered?

[kenrbnsn]

Use the function strtolower() when doing the compare.

 

Ken

[The Little Guy]

strtolower wont work.

 

 

if

the real code is: 4rrR

 

and they enter: 4rrR

 

then when comapired it will do this:

 

if(4rrr == 4rrr)

  these values match

[The Little Guy]

instead I would use this:

 

<?php
$proCode = "~aedIDSs434r~";
$enterCode = 'aedIDSs434R';
if(preg_match($proCode,$enterCode)){
echo 'The codes Match';
}else{
echo 'The codes Do not Match.';
}
?>

 

Change the case of 'R' at the end of $enterCode to see changes in the output.

[kenrbnsn]

Why won't strtotlower work for what the OP asked? He wants the comparison to be case insensitive, not case sensitive.

 

Ken

[The Little Guy]

Oops, I thought read the title, and was suspecting he wanted case sensitivity. then I read the last words as "case sensitive", not "case insensitive".

 

Sorry... my mistake.