Simple voting system [refresh anti-refresh program] _ PHP Tutorial

Simple voting system [refresh anti-refresh program]. Simple voting system [anti-refresh program]? Phpinclude_once (.. incconnect. php); $ value $ _ SERVER [HTTP_HOST]; if (empty ($ _ COOKIE [cook]) {if (sizeof ($ _ POST) 9) {exit (scriptalert (sorry Simple voting system [refresh anti-refresh program]

Include_once ("../inc/connect. php ");
$ Value = $ _ SERVER ['http _ host'];
If (empty ($ _ COOKIE ["cook"]) {
If (sizeof ($ _ POST) <9) {exit ("script" alert ('sorry, you still have the option not selected! '); History. back (); script ");}
For ($ I = 1; $ I <= 8; $ I ++ ){
$ C = $ _ POST ['R'. $ I];
Switch (intval ($ c )){
Case 0:
$ Word = 'vote _ r1 ';
Break;
Case 1:
$ Word = 'vote _ R2 ';
Break;
Case 2:
$ Word = 'vote _ r3 ';
Break;
Default:
Exit ('error ');
}
$ SQL = "update gx_votes set $ word = $ word + 1, vote_times = vote_times + 1 where id = $ I ";
Mysql_query ($ SQL) or die (mysql_error ());
}
If (! Empty ($ _ POST ['r9']) |! Empty ($ _ POST ['r10']) {sava_voteinfo ();}
Echo "script" alert ('thank you for your participation. your report has been submitted! '); History. back (); script ";
Setcookie ("cook", $ value, time () + 7200 ,"/");

} Else {
Print "Sorry, you have already voted. click back ";
}

Function sava_voteinfo (){
$ Vote_modi = addslashes (php_sava (isset ($ _ POST ['r9'])? $ _ POST ['r9']: '');
$ Vote_info = addslashes (php_sava (isset ($ _ POST ['r10'])? $ _ POST ['r10']: '');
$ Vote_ip = isset ($ _ SERVER ['remote _ ADDR '])? $ _ SERVER ['remote _ ADDR ']: 'Ip not obtained ';
$ Vote_time = date ("Y-m-d H: I: s ");
$ Vote_ SQL = "Insert into ss (vote_ip, vote_modi, vote_info, vote_time) value ('$ vote_ip', '$ vote_modi', '$ vote_info', '$ vote_time ')";
Mysql_query ($ vote_ SQL) or die ('error ');

}

Function php_sava ($ str)
{
$ Farr = array (
"/\ S + /",
"/<(\/?) (Script | I? Frame | style | html | body | title | link | meta | \? | \ %) ([^>] *?)> /IsU ",
"/(<[^>] *) On [a-zA-Z] + \ s * = ([^>] *>)/isU ",

);
$ Tarr = array (
"",
"<\ 1 \ 2 \ 3>", // leave this field blank if you want to clear insecure labels directly.
"\ 1 \ 2 ",
);

$ Str = preg_replace ($ farr, $ tarr, $ str );
Return $ str;
}

?>

Recently, this kind of cookie-based program can clear and refresh cookies. One way is that I have done it before. First, the client first prevents the refresh and then saves the user's IP address to the database, in this way, the user will use the php program to check whether the operation is performed within the specified time so that the real anti-click protection can be implemented.

Why? Php include_once (.. /inc/connect. php); $ value = $ _ SERVER ['http _ host']; if (empty ($ _ COOKIE [cook]) {if (sizeof ($ _ POST) 9) {exit (scriptalert ('Sorry...