【php函数】过滤Html标签

kn
2019-08-01 15:57:30
php

function checkStrHtml($string){
        $string = trim_space($string);
 
        if(is_numeric($string)) return $string;
        if(!isset($string) or empty($string)) return '';
 
        $string = preg_replace('/[\\x00-\\x08\\x0B\\x0C\\x0E-\\x1F]/','',$string);
        $string  = ($string);
 
        $string = strip_tags($string,""); //清除HTML如<br />等代码
        // $string = str_replace("\n", "", str_replace(" ", "", $string));//去掉空格和换行
        $string = str_replace("\n", "", $string);//去掉空格和换行
        $string = str_replace("\t","",$string); //去掉制表符号
        $string = str_replace(PHP_EOL,"",$string); //去掉回车换行符号
        $string = str_replace("\r","",$string); //去掉回车
        $string = str_replace("'","‘",$string); //替换单引号
        $string = str_replace("&amp;","&",$string);
        $string = str_replace("=★","",$string);
        $string = str_replace("★=","",$string);
        $string = str_replace("★","",$string);
        $string = str_replace("☆","",$string);
        $string = str_replace("√","",$string);
        $string = str_replace("±","",$string);
        $string = str_replace("‖","",$string);
        $string = str_replace("×","",$string);
        $string = str_replace("∏","",$string);
        $string = str_replace("∷","",$string);
        $string = str_replace("⊥","",$string);
        $string = str_replace("∠","",$string);
        $string = str_replace("⊙","",$string);
        $string = str_replace("≈","",$string);
        $string = str_replace("≤","",$string);
        $string = str_replace("≥","",$string);
        $string = str_replace("∞","",$string);
        $string = str_replace("∵","",$string);
        $string = str_replace("♂","",$string);
        $string = str_replace("♀","",$string);
        $string = str_replace("°","",$string);
        $string = str_replace("¤","",$string);
        $string = str_replace("◎","",$string);
        $string = str_replace("◇","",$string);
        $string = str_replace("◆","",$string);
        $string = str_replace("→","",$string);
        $string = str_replace("←","",$string);
        $string = str_replace("↑","",$string);
        $string = str_replace("↓","",$string);
        $string = str_replace("▲","",$string);
        $string = str_replace("▼","",$string);
 
        // --过滤微信表情
        $string = preg_replace_callback('/[\xf0-\xf7].{3}/', function($r) { return '';}, $string);
 
        return $string;
    }

function trim_space($str, $arr = array())
    {
        if (empty($arr)) {
            $arr = array(' ', '　');
        }
        foreach ($arr as $key => $val) {
            $str = preg_replace('/(^'.$val.')|('.$val.'$)/', '', $str);
        }
 
        return $str;
    }

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