Search String Partially
I search this string for non-alpha numeric chars and get rid of them.
$my2 = preg_replace("/[^a-zA-Z0-9s]/", "", $my);
What i want to do is the same but allow the string to keep a '.' or a '_' (dot and underscore). eg my3_one.txt is a string i would allow but my3*one.txt is not allowed. How do i do this ?
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