如何过滤高亮显示非法字符_PHP
- WBOYOriginal
- 2016-06-01 12:27:02839browse
//我只是做一个测试,如果再用类似tmd的字符串,一定要注意,如果字符串中的字符出现在$StartReplaceHtml或者$EndReplaceHtml中,你需要修改下面的preg_replace中的规则
$CheckedMessage="Hello!!他X的..他....X...的....How are you m d "; //the message to be checked
echo $CheckedMessage."
";
$CheckedWords=array("他X的","tmd");//要过滤的非法字符,如果你需要把单个的字符也过滤,比如:他ererX000的过滤出来他,X,的,你就没必要把过滤字符设置成"他X的"只要设置成$CheckedWords=array("他","X","的");就可以了
$StartReplaceHtml="";
$EndReplaceHtml="";
$CheckOther= true;//设置标示位,是否显示单个的字符,如果设置成true,下面的if(strstr……)就不需要了
for($i=0;$i
if(strstr($CheckedMessage,$CheckedWords[$i])){ //此处可去掉
$CheckedMessage=eregi_replace($CheckedWords[$i],$StartReplaceHtml.$CheckedWords[$i].$EndReplaceHtml,$CheckedMessage);//如果只过滤诸如"他X的"字符串(是字符串,不是单个字符),可以直接写这句,同时把$CheckOther设置成false
}
if($CheckOther == true){
$CharStringLength = strlen($CheckedWords[$i]);
for($j=0;$j
$AssumeLength=1;//假定截取长度
if(ord(substr($CheckedWords[$i],$j,$AssumeLength))>0xa0){//如果汉字,假定长度加一
$AssumeLength++;
}
$SubstrChar = substr($CheckedWords[$i],$j,$AssumeLength);
$CheckedMessage=preg_replace("/(?中的t不会被替换,如果需要过滤掉在$StartReplace或者在$EndReplaceHtml中的的字符,需要修改规则,否则的话将会出现乱码
if($AssumeLength!=1){//如果当前截取字符为汉字
$j++;
}
}
}
}
echo $CheckedMessage;
//只是一个简单的测试,希望对你有所帮助,希望你能举一反三,好运!
?>
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