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function flagTst ( $flags, $f, $v ) {#-k flags#- test the '$f'th flag for the value '$v' if (($f < 1) or ($f > 49)) return false; $flg = str_split ( $flags ); if (!isset($flg[$f])) return false; # that position doesn't exist if ($flg[$f] == $v) return true; return false; }?>