ajax php 聊天室实例代码

 "欢迎来到迷你ajax聊天室。最新版本 1.2。下载请到www.phprm.com",
    //聊天室标题
    "title" => "mini ajax chatroom by longbill",
    //第一个到聊天室的欢迎
    "firstone" => "welcome to longbill's mini ajax chatroom!",
    //当信息有禁止内容时显示
    "ban" => "i am a pig!",
    //关键字
    "keywords" => "聊天室,迷你,小型,ajax,chat,chatroom,longbill,phprm.com,php,网页特效",
    //发言提示
    "hereyourwords" => "在这里发言!"
);
error_reporting(e_all ^ e_notice ^ e_warning);
header("content-type:text/html; charset=utf-8");
$get_past_sec = 3; //如果发现丢话，可以适当调大这个值
$touchs = 10; //检查在线人数的时间间隔
if (!function_exists("file_get_contents")) {
    function file_get_contents($path) {
        if (!file_exists($path)) return false;
        $fp = @fopen($path, "r");
        $all = fread($fp, filesize($path));
        fclose($fp);
        return $all;
    }
}
if (!function_exists("file_put_contents")) {
    function file_put_contents($path, $val) {
        $fp = @fopen($path, "w");
        fputs($fp, $val);
        fclose($fp);
        return true;
    }
}
$title = $lang["title"];
$earlier = 10;
$description = $lang["description"];
$origroom = $room;
$least = ($_get["dis"]) ? intval($_get["dis"]) : $leastnum;
$touchme = $_post['touchme'];
if (!is_dir($roomdir)) @mkdir($roomdir) or die("error when creating folder $roomdir");
$room = $_get['room'];
if (!$room) $room = $_post["room"];
$room = checkfilename($room);
if (!$room) $room = $origroom;
$filename = $roomdir . $room . ".dat.php";
$datafile = $roomdir . $room . ".php";
if (!file_exists($filename)) @file_put_contents($filename, '' . " " . time() . "|" . $lang["firstone"] . " ");
if (!file_exists($datafile)) @file_put_contents($datafile, '' . " ");
$action = $_post["action"];
function checkfilename($file) {
    if (!$file) return "";
    $file = trim($file);
    $a = substr($file, -1);
    $file = eregi_replace("^[./]*", "", $file);
    $file = eregi_replace("[./]*$", "", $file);
    $arr = array(
        "../",
        "./",
        "/",
        "",
        "..",
        "."
    );
    $file = str_replace($arr, "", $file);
    return $file;
}
function get_ip() {
    global $_server;
    if ($_server) {
        if ($_server[http_x_forwarded_for]) $realip = $_server["http_x_forwarded_for"];
        else if ($_server["http_client_ip"]) $realip = $_server["http_client_ip"];
        else $realip = $_server["remote_addr"];
    } else {
        if (getenv('http_x_forwarded_for')) $realip = getenv('http_x_forwarded_for');
        else if (getenv('http_client_ip')) $realip = getenv('http_client_ip');
        else $realip = getenv('remote_addr');
    }
    return $realip;
}
function array2json($arr) {
    $keys = array_keys($arr);
    $isarr = true;
    $json = "";
    for ($i = 0; $i  20) die('error');
    for ($i = 0; $i ", $content);
        $content = ($style) ? "{$content}" : $content;
        $s.= $t . "|" . $name . ":" . $content . " ";
    }
    if (!$s) die("no content!!");
    $fp = @fopen($filename, "a+");
    if (!$fp) die("repeat");
    $re_time = 0;
    while (!@flock($fp, lock_ex)) {
        sleep(1);
        $re_time++;
        if ($re_time >= 4) break;
    }
    if ($re_time  360 * 48) die;
    $name = $_post['name'];
    $name = str_replace(" ", "", $name);
    $ip = get_ip();
    $json = array();
    $json["lastmod"] = time();
    $item = array();
    $newonline = array();
    $offline = array();
    $fp = @fopen($filename, 'r');
    flock($fp, lock_ex);
    $s = fread($fp, filesize($filename));
    flock($fp, lock_un);
    fclose($fp);
    $lines = explode(" ", $s);
    if ($alastmod >= $lastmod && !$first) {
        foreach ($lines as $l) {
            $item2 = array();
            $l = str_replace(array(
                " ",
                " "
            ) , "", $l);
            if (strpos($l, "|") === false) continue;
            $arr = explode("|", $l);
            $t = intval($arr[0]);
            if ($t >= $lastmod) {
                $item2["time"] = date("h:i:s", $t);
                $item2["word"] = addslashes($arr[1]);
                $item[] = $item2;
            }
        }
    } else if ($first) {
        $item = array();
        $total = count($lines);
        for ($i = $total - 1; $i >= $total - $least; $i--) {
            if ($i 

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') this.value=''; window.editing=0; " 
 onkeydown="return check_send(event);" ><?php echo $lang["hereyourwords"]; ?>

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