PHP通用防注入安全代码

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说明：

判断传递的变量中是否含有非法字符

如$_POST、$_GET

功能：

防注入

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<?php

//要过滤的非法字符

$ArrFiltrate=array("'",";","union");

//出错后要跳转的url,不填则默认前一页

$StrGoUrl="";

//是否存在数组中的值

function FunStringExist($StrFiltrate,$ArrFiltrate){

foreach ($ArrFiltrate as $key=>$value){

if (eregi($value,$StrFiltrate)){

return true;

}

}

return false;

}

//合并$_POST 和 $_GET

if(function_exists(array_merge)){

$ArrPostAndGet=array_merge($HTTP_POST_VARS,$HTTP_GET_VARS);

}else{

foreach($HTTP_POST_VARS as $key=>$value){

$ArrPostAndGet[]=$value;

}

foreach($HTTP_GET_VARS as $key=>$value){

$ArrPostAndGet[]=$value;

}

}

//验证开始

foreach($ArrPostAndGet as $key=>$value){

if (FunStringExist($value,$ArrFiltrate)){

echo "<script language=/"javascript/">alert(/"Neeao提示，非法字符/");</script>";

if (empty($StrGoUrl)){

echo "<script language=/"javascript/">history.go(-1);</script>";

}else{

echo "<script language=/"javascript/">window.location=/"".$StrGoUrl."/";</script>";

}

exit;

}

}

?>

保存为checkpostandget.php

然后在每个php文件前加include(“checkpostandget.php“);即可