把常见的分隔符按照自定义的格式分割

自定义还需在提炼一下

//    格式化关键字
    protected function formatting_keyword($txt)
    {
        $txt = trim($txt);

        $arr = [',','，','、','；',':','|',';'];  //这里放要过滤的

        foreach ($arr as $k=>$v) {

            if(strpos($txt, $v) !== false){
                $zhi = $v;
            }

        }

        if ($zhi){
            $txt2 = str_replace($zhi, ";", $txt);  //此处是；分割符
            $jieguo = preg_replace("/[\s]+/is", "", $txt2);
        }else{
            $jieguo = preg_replace("/[\s]+/is", " ", $txt);
            $jieguo = str_replace(' ', ";", $jieguo);

//此处是；分割符

} return $jieguo; }