值得分享的php+ajax实时聊天室

非常经典的一款PHP+ajax实时聊天室,其中使用PHP文件保存聊天记录,按天划分,PHP实现聊天的功能只有一个文件，整合了PHP与AJAX技术，也就是说只要运行这一个文件就可以启动PHP的聊天室了，关于代码上面也是非常的简单，但是实现了聊天室一般的功能，聊天时的昵称，更改昵称的颜色，聊天字号大小，字体，加粗，窗体的变大变小等等，如果你想搞个聊天室来玩玩，这个源码完全可以满足普通的需求。

具体的效果看如下图:

关键代码：

rush:PHP;"> "聊天室.",//聊天室标题 "title"=>"Welcome...!",//第一个到聊天室的欢迎 "firstone"=>"Welcome...!",//当信息有禁止内容时显示 "ban" => array('法轮功','共产党','李洪志','fuck','叼','你妈的','他妈的'),//关键字 "keywords"=>"Welcome...!",//发言提示 "hereyourwords" => "在这里发言!" );

$touchs = 10;
$title = $lang["title"];
$earlier = 10;
$description = $lang["description"];
$origroom = $room;
$least = ($_GET["dis"])?intval($_GET["dis"]):$leastnum;
if ($_GET["room"]) $room = $_GET["room"];
$room = checkfilename($room);
if (!$room) $room = $origroom;
$filename = $roomdir.$room.".dat.PHP";
$datafile = $roomdir.$room.".PHP";

if (!is_dir($roomdir)) {
@mkdir($roomdir,0777) or exit('no this dir.');
}
if(file_exists($filename)){
if ((int)filemtime($filename) + 1800 < time()) {
unlink($filename);
}
}

if (!file_exists($filename)) @file_put_contents($filename,'<?php die();?>'."\n".time()."|".$lang["firstone"]."\n");
if (!file_exists($datafile)) @file_put_contents($datafile,'<?php die();?>'."\n");
$action = $_GET["action"];

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;
}
}

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($arr)
{
if (function_exists('json_encode')) return json_encode($arr);
$keys = array_keys($arr);
$isarr = true;
$json = "";
for($i=0;$i<count($keys);$i++)
{
if ($keys[$i] !== $i)
{
$isarr = false;
break;
}
}
$json = $space;
$json.= ($isarr)?"[":"{";
for($i=0;$i<count($keys);$i++)
{
if ($i!=0) $json.= ",";
$item = $arr[$keys[$i]];
$json.=($isarr)?"":$keys[$i].':';
if (is_array($item))
$json.=array2json($item);
else if (is_string($item))
$json.='"'.str_replace(array("\r","\n"),$item).'"';
else $json.=$item;
}
$json.= ($isarr)?"]":"}";
return $json;
}

if ($action == "write")
{
$color = $_GET['color'];
if (!eregi("[0-9a-fA-F]{6}",$color) || $color == "#000000") $color = "";
$color = "#".$color;
$size = intval($_GET["size"]);
$arr = @file("PHP://input");
$name = str_replace(array("\n","\r"),$arr[0]);
$ip = get_ip();
if ($disonline)
{
$onlines = @file_get_contents($datafile);
$s1 = "|{$name}|{$ip}|";
if (strpos($onlines,$s1) === false)
{
if (strpos($onlines,"|".$name."|") === false)
{
$fp = @fopen($datafile,"a+");
if ($fp)
{
if (@flock($fp,LOCK_EX))
{
@fputs($fp,time()."|".time().$s1."\n");
@flock($fp,LOCK_UN);
}
@fclose($fp);
}
}
else
{
echo "NAME";
die();
}
}
}

$s = "";
$style = "";
$font = $_GET["font"];
if ($font == "songti") $font = "宋体";
else if ($font == "heiti") $font = "黑体";
else if ($font == "kaiti") $font = "楷体_GB2312";
else $font = "";
$style .= (!$font)?"":"font-family:".$font.";";
$style .= (!$_GET["bold"])?"":"font-weight:bold;";
$style .= (!$color || $color == "#")?"":"color:{$color};";
$style .= (!$size || $size == "16")?"":"font-size:{$size}px;";
$t = time();
for($i = 1;$i<count($arr);$i++)
{
$content = $arr[$i];
$content = str_replace(array("\n",$content);
if ($content == "") continue;
$content = preg_replace("!<img\s+(.?)/>!i","[img $1/]",$content);
$content = str_replace(array('<','>'),array('<',$content);
$content = preg_replace("![img (.?)/]!i","<img $1/>",$content);
$content = str_replace($lang['ban'],'',$content);
$content = ($style)?"{$content}":$content;
$ubbarray = array('[:ani_wink:]','[:big_eyes:]','[:cool:]','[:cry:]','[:eye_roll:]','[:grin:]','[:happy:]','[:not_impressed:]','[:smile:]','[:smile_eyes:]','[:stickout:]','[:straight:]','[:surprised:]','[:unhappy:]','[:wink:]');
$content = str_replace($ubbarray,array('','','','','','','','','','','','','','',''),$content);
$s.= $t."|".$name.":".$content."\n";
}
if (!$name) die("No Name!!");
if (!$s) die("No Content!!");
$fp = @fopen($filename,"a+");
if (!$fp) die("repeat");
if (@flock($fp,$s);
@flock($fp,LOCK_UN);
}
else die("repeat");
@fclose($fp);
echo "OK";
}
else if (trim($action) == "read")
{
if (get_magic_quotes_runtime()) {
set_magic_quotes_runtime(0);
}
$first = $_GET["first"];
$lastmod = intval($_GET["lastmod"]);
$alastmod = @filemtime($filename);
$name = file_get_contents("PHP://input");
$name = str_replace("\n",$name);
$ip = get_ip();
$json = array();
$json["lastmod"] = $alastmod;
$item = array();
$newonline = array();
$offline = array();

$lines = @file($filename);
if ($alastmod > $lastmod && !$first)
{
foreach($lines as $l)
{
$item2 = array();
$l = str_replace(array("\n",$l);
if (strpos($l,"|") === false) continue;
$arr = explode("|",$l);
$t = intval($arr[0]);
if ($t > $lastmod)
{
$item2["time"] = date("H:i:s",$t);
$item2["word"] = stripslashes($arr[1]);
$item[] = $item2;
}
}
}
else if ($first)
{
$item = array();
$total = count($lines);
for($i=$total-1;$i>=$total-$least;$i--)
{
if ($i<=0) break;
$item2 = array();
$l = str_replace(array("\n",$lines[$i]);
if (strpos($l,$l);
$t = intval($arr[0]);
$item2["time"] = (date("m-d",time()) == date("m-d",$t))?date("H:i:s",$t):date("m-d H:i",$t);
$item2["word"] = stripslashes($arr[1]);
$item[] = $item2;
}
$item = array_reverse($item);
}

$s = "";
$nt = time();
$onlines = array();
if($disonline)
{
$users = @file($datafile);
foreach($users as $l)
{
$l = str_replace(array("\r","|") === false)
{
$s.=$l."\n";
continue;
}
$arr = explode("|",$l);
if ($nt - intval($arr[1]) < $touchs*2+1)
{
if (trim($name) == trim($arr[2]))
{
$s.= $arr[0]."|".time()."|".$name."|".get_ip()."|\n";
}
else $s.=$l."\n";
$onlines [] = $arr[2];
}
}
@file_put_contents($datafile,$s);
$json["onlines"] = $onlines;
}
$json["lines"] = $item;
echo array2json($json);
if (!get_magic_quotes_runtime()) {
set_magic_quotes_runtime(1);
}
}
else
{
?>

安装说明:

因为这一款PHP+ajax实时聊天室的聊天记录是保存到PHP文件中的,所以不用导入数据库,安装自然也就方便多了,只需要将下载的文件包解压缩到可以运行PHP的根目录下即可.

源码下载：

PHP-chat(jb51.cc).rar">PHP+ajax实时聊天室

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程之家。