PHP采集利器：根据开始字符串和结束字符串截取需要的采集内容数据

function strCutByStr(&$str, $findStart, $findEnd = false, $encoding = 'utf-8'){        if(is_array($findStart)){            if(count($findStart) === count($findEnd)){                foreach($findStart as $k => $v){                    if(($result = strCutByStr($str, $v, $findEnd[$k], $encoding)) !== false){                        return $result;                    }                }                return false;            }else{                return false;            }        }                 if(($start = mb_strpos($str, $findStart, 0, $encoding)) === false){            return false;        }                 $start += mb_strlen($findStart, $encoding);                 if($findEnd === false){            return mb_substr($str, $start, NULL, $encoding);        }                 if(($length = mb_strpos($str, $findEnd, $start, $encoding)) === false){            return false;        }                 return mb_substr($str, $start, $length - $start, $encoding);    }