HTML string filtering function in php_PHP tutorial

 　　自定义的一个函数

 代码如下

function StripHTML($string){
 $pattern=array ("']*?>.*?'si", "']*?>.*?'si",  "'<[/!]*?[^<>]*?>'si",  "'([rn])[s]+'",  "'&(quot|#34);'i",  "'&(amp|#38);'i",  "'&(lt|#60);'i",  "'&(gt|#62);'i",  "'&(nbsp|#160);'i",  "'&(iexcl|#161);'i",  "'&(cent|#162);'i",  "'&(pound|#163);'i",  "'&(copy|#169);'i",  "'(d+);'e");
 $replace=array ('', '', "1", '', "&", "<", ">", ' ', chr(161), chr(162), chr(163), chr(169), "chr(1)");
 return preg_replace ($pattern, $replace, $str);
}

代码如下

function StripHTML($string){  $pattern=array ("']*?>.*?'si", "']*?>.*?'si",  "'<[/!]*?[^<>]*?>'si",  "'([rn])[s]+'",  "'&(quot|#34);'i",  "'&(amp|#38);'i",  "'&(lt|#60);'i",  "'&(gt|#62);'i",  "'&(nbsp|#160);'i",  "'&(iexcl|#161);'i",  "'&(cent|#162);'i",  "'&(pound|#163);'i",  "'&(copy|#169);'i",  "'&#(d+);'e");  $replace=array ('', '', "1", '', "&", "<", ">", ' ', chr(161), chr(162), chr(163), chr(169), "chr(1)");  return preg_replace ($pattern, $replace, $str); }

　　除了上面自定的函数之外还有一个php自带的过滤html的函数：strip_tags(string) 这样就可以过滤掉所有的html标签了。

如果想过滤掉除了 之外的所有html标签，则可以这样写：

 代码如下

strip_tags(string,"");

代码如下
strip_tags(string,"");

过滤除了

xxx

之外的所有html标签，则可以这样写：

 代码如下

strip_tags(string,"

");

代码如下
strip_tags(string," ");

Found an anti-sql injection function on the Internet

The code is as follows

//php batch filter posts, get sensitive data if (get_magic_quotes_gpc()) { $_GET = stripslashes_array($_GET); $_POST = stripslashes_array($_POST); } function stripslashes_array(&$array) { while(list($key,$var) = each($array)) { if ($key != 'argc' && $key != 'argv' && (strtoupper($key) != $key || ''.intval($key) == "$key")) { if (is_string($var)) { $array[$key] = stripslashes($var); } if (is_array($var)) { $array[$key] = stripslashes_array($var); } } } return $array; } ​​​​ //-------------------------- // Replace the HTML tail tag to provide filtering service www.111cn.net //-------------------------- function lib_replace_end_tag($str) { if (empty($str)) return false; $str = htmlspecialchars($str); $str = str_replace( '/', "", $str); $str = str_replace("", "", $str); $str = str_replace(">", "", $str); $str = str_replace("<", "", $str); $str = str_replace("<SCRIPT>", "", $str);<br> $str = str_replace("</SCRIPT>", "", $str); $str = str_replace("<script>", "", $str);<br> $str = str_replace("</script>", "", $str); $str=str_replace("select","select",$str); $str=str_replace("join","join",$str); $str=str_replace("union","union",$str); $str=str_replace("where","where",$str); $str=str_replace("insert","insert",$str); $str=str_replace("delete","delete",$str); $str=str_replace("update","update",$str); $str=str_replace("like","like",$str); $str=str_replace("drop","drop",$str); $str=str_replace("create","create",$str); $str=str_replace("modify","modify",$str); $str=str_replace("rename","rename",$str); $str=str_replace("alter","alter",$str); $str=str_replace("cas","cast",$str); $str=str_replace("&","&",$str); $str=str_replace(">",">",$str); $str=str_replace("<","<",$str); $str=str_replace(" ",chr(32),$str); $str=str_replace(" ",chr(9),$str); $str=str_replace(" ",chr(9),$str); $str=str_replace("&",chr(34),$str); $str=str_replace("'",chr(39),$str); $str=str_replace(" ",chr(13),$str); $str=str_replace("''","'",$str); $str=str_replace("css","'",$str); $str=str_replace("CSS","'",$str); return $str; }

　　使用方法

 代码如下

代码如下
引用是直接这样： $xxx = htmlspecialchars($_POST['xxx']); 或者 $xxx = htmlspecialchars($_GET['xxx']);

 

引用是直接这样：
$xxx = htmlspecialchars($_POST['xxx']);
或者
$xxx = htmlspecialchars($_GET['xxx']); http://www.bkjia.com/PHPjc/727582.htmlwww.bkjia.com

truehttp://www.bkjia.com/PHPjc/727582.html

TechArticle自定义的一个函数 代码如下 function StripHTML($string){ $pattern=array ('script[^]*?.*?/script'si, 'style[^]*?.*?/style'si, '[/!]*?[^]*?'si, '([rn])[s]+', '(quot|#34);'i...