PHP用星号隐藏部份用户名、身份证、IP、手机号等实例

        if(count($t_string[0]) - $start > $sublen) return join('', array_slice($t_string[0], $start, $sublen));
        return join('', array_slice($t_string[0], $start, $sublen));
    }
    else
    {
        $start = $start*2;
        $sublen = $sublen*2;
        $strlen = strlen($string);
        $tmpstr = '';

        for($i=0; $i< $strlen; $i++)
        {
            if($i>=$start && $i< ($start+$sublen))
            {
                if(ord(substr($string, $i, 1))>129)
                {
                    $tmpstr.= substr($string, $i, 2);
                }
                else
                {
                    $tmpstr.= substr($string, $i, 1);
                }
            }
            if(ord(substr($string, $i, 1))>129) $i++;
        }
        //if(strlen($tmpstr)< $strlen ) $tmpstr.= "...";
        return $tmpstr;
    }
}

//方法三
$haoma="15012345678";
echo preg_replace("/(d{3})d{5}/","$1*****",$haoma);
//输出150*****678

//方法四
$tel1 = "13888111188";
$tel2 = "+8613888111188";
$tel3 = "0861088111188";
$tel4 = "086-010-88111188";
echo preg_replace('/(^.*)\d{4}(\d{4})$/','\\1****\\2',$tel1),"\n";
echo preg_replace('/(^.*)\d{4}(\d{4})$/','\\1****\\2',$tel2),"\n";
echo preg_replace('/(^.*)\d{4}(\d{4})$/','\\1****\\2',$tel3),"\n";
echo preg_replace('/(^.*)\d{4}(\d{4})$/','\\1****\\2',$tel4),"\n";

//方法五
//屏蔽电话号码中间的四位数字
function hidtel($phone)
{
    $IsWhat = preg_match('/(0[0-9]{2,3}[\-]?[2-9][0-9]{6,7}[\-]?[0-9]?)/i',$phone); //固定电话
    if($IsWhat == 1)
    {
        return preg_replace('/(0[0-9]{2,3}[\-]?[2-9])[0-9]{3,4}([0-9]{3}[\-]?[0-9]?)/i','$1****$2',$phone);

    }
    else
    {
        return  preg_replace('/(1[358]{1}[0-9])[0-9]{4}([0-9]{4})/i','$1****$2',$phone);
    }
}