[php函数]切割字符串

/** * function cut is used to cut string between $from and $to */ function cut($str,$from,$to,$direct='out') { //echo "$str \n $from \n $to \n"; //$from = "\""; $to = "\""; $frompos = strpos($str,$from); $topos = strpos($str,$to,$frompos+strlen($from)); if($direct == 'in'){ $start = $frompos+strlen($from); $end = $topos-$start; $txt = substr($str,$start,$end); } else { $start = $frompos; $end = $topos+strlen($to)-$frompos; $txt = substr($str,$start,$end); } return $txt; } // end func cut