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);
}举例：
$str = '1那是一场23我问问4567890维稳'; echo (strCutByStr($str, '那是', '稳'));//输出 一场23我问问4567890维
