Q: Logical assignment with strstr( )

Dear list, strstr returns a string (in case the needle is found), but a boolean if there is no needle in the haystack. I am trying to make a readable evaluation of some tests, but this fails to work as supposed because of - undefined results when "OR"ing strings with possible string (?) - use of bitwise OR operator ("|") where I am uncertain if I can write anything like $a ||= $b; Please read this snippet and tell me your ideas ;) Thanks Ralf $oLen = strlen ($commentary); $isSpam = ! strstr($_POST['Name']," "); $isSpam |= strlen (str_replace("http://","",$commentary)) < $oLen; $isSpam |= strstr($_POST['Name'],"@"); $isSpam |= stristr($_POST['Name'],"Casino"); //My next trial will be to add "is_string( ...)"