Removing a particular character from a variable

[unistake]

Hi all,

 

I need to remove any '-' character from a user input in a html form.

 

How can I get rid of this character?

 

e.g.

$var  = A-1DAS

$var1 = strtolower($var);

 

I need the output as 'a1das'

 

 

[revraz]

http://php.net/manual/en/function.str-replace.php

[unistake]

Thanks,

 

Can this be simplified?

 

$dash = "-";
$dir_temp = str_replace($dash, "", $reg);
$directory = strtolower($dir_temp);

[revraz]

$reg = "1-2-3";

$directory = strtolower(str_replace("-","",$reg));

echo $directory;