felayman------php_自定义函数过滤指定字符
<?php/**
* Created by PhpStorm.
* User: FelayMan
* Date: 14-4-7
* Time: 下午5:09
*/
function filter_str($str){
$arr = array('图书','明日科技','软件','变成词典','词典');
//implode将数组连接成字符串
$repstr = implode(',',$arr);
echo $repstr;
//preg_match将会在$repstr中检索$str,如果出现则会停止检索
if(preg_match("/$str/",$repstr)){
echo "<script>
alert('您使用了禁用词语');
window.location.href='filter_string.php5';
</script>";
}else{
echo $str;
}
}
function filter_words($str){
//假设我无法在留言板中输入中国
$words = "中国";
if(preg_match("/$words/",$str)){
echo "<script>
alert('你的留言者包含了危险词语');
window.location.href='filter_string.php5';
</script>";
}else{
echo "$str";
}
}
if(!empty($_POST['sub'])){
// filter_str($_POST['content']);
filter_words($_POST['content']);
}
?>
<!doctype html>
<html>
<head>
<title>自定义函数过滤器</title>
<meta charset="utf-8"/>
</head>
<body>
<form action="filter_string.php5" method="post">
请留言:<textarea rows="7" cols="20" name="content"></textarea>
<input type="submit" value="提交留言" name="sub"/>
</form>
</body>
</html>
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