strip out unwanted characters

[juschillinnow]

how do you strip out unwanted characters

I've seen it about 3 times in the forum, but can't find it on a search.

Thanks.

[epimeth]

function strip_chars($unwanted_chars, $myString)
{
for ($i = 0; $i < strlen($unwanted_chars)-1; $i++){
 ereg_replace($unwanted_chars[$i], '', $myString);
}

[xblue]

just one call to ereg_replace (or preg_replace which I prefer) should be absolutely enough.

also keep in mind that these functions do not modify the original, so you have to assign the return value to something.

$str = preg_replace('/[$unwanted_chars]/', '', $str);

[epimeth]

of course... silly me 🙂

[juschillinnow]

yeah, but what is the one where you:

ereg_replace("/^[0-9]\/~/", $str)

or whatever it is that will strip out all non alpha-numeric characters?

[xblue]

what is inside the square brackets is a character class. you seem to be looking for negated character classes like
'/[^a-zA-Z0-9]/'
(matches everything which is not alphanumeric) - note that the circumflex is inside the bracket, otherwise it means the beginning of string?