Removing Multiple Characters

[Seraph]

Hi all, I'm still sort of new to the whole PHP coding and I was wondering if there was a way to filter multiple characters in a string

For Example if someone entered OMG!!!!!, it would filter it o become OMG!

Any help would be appreciated, thanks :)

[eelixduppy]

What do you mean by character? Only non-alphanumeric characters?

Here's something to get you started that I wrote up real quick:

function Test_Function($match)
{
return $match[1];
}
$string = "OMG! there''''s an eeerooor in this code but maybe it will guide you?";
$pattern = "/([^\w\s])+/";
echo [url=http://us2.php.net/manual/en/function.preg-replace-callback.php]preg_replace_callback[/url]($pattern,"Test_Function",$string);

You may already see the problem; if there are two non-alphanumeric characters next to each other, the latter will be erased. Mess around with it to see what you can get.

...and welcome to webmasterworld! :)

[mcibor]

It's hard to accomplish.

To remove multiple! you can use

$text = preg_replace( "/\!{1,}/", "!", $text );

To remove all doubles (and only doubles) I don't know how to perform that.

Michal

[coopster]

Related threads:
Check text string for duplicates [webmasterworld.com]
Checking string for consecutive alpha numerics [webmasterworld.com]

[Seraph]

Thanks for your help :)