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本篇文章給大家分享的是有關(guān)使用php+ajax怎么實(shí)現(xiàn)一個(gè)實(shí)時(shí)聊天室功能,小編覺(jué)得挺實(shí)用的,因此分享給大家學(xué)習(xí),希望大家閱讀完這篇文章后可以有所收獲,話不多說(shuō),跟著小編一起來(lái)看看吧。
php是一個(gè)嵌套的縮寫(xiě)名稱,是英文超級(jí)文本預(yù)處理語(yǔ)言,它的語(yǔ)法混合了C、Java、Perl以及php自創(chuàng)新的語(yǔ)法,主要用來(lái)做網(wǎng)站開(kāi)發(fā),許多小型網(wǎng)站都用php開(kāi)發(fā),因?yàn)閜hp是開(kāi)源的,從而使得php經(jīng)久不衰。
關(guān)鍵代碼:
<?php header('content-type:text/html;charset=utf-8'); //顯示在線用戶 $disonline = 1; //新登陸時(shí)顯示最近內(nèi)容的條數(shù)(默認(rèn)為30條) $leastnum = 30; //默認(rèn)的房間名(默認(rèn)是每天換一個(gè)文件),如果去掉d,則是每月?lián)Q一個(gè)文件 $room = date("Y-m-d"); //房間保存路徑,必須仿quot;/"結(jié)尾,可以丿quot;../",等 $roomdir = "rooms/"; //編碼方式 $charset = "UTF-8"; //客戶端最大顯示內(nèi)容條數(shù)(建議不要太大) $maxdisplay = 300; //語(yǔ)言包 $lang = array( //聊天室描述 "description"=>"聊天室.", //聊天室標(biāo)題 "title"=>"Welcome...!", //第一個(gè)到聊天室的歡迎 "firstone"=>"<span style='font-size:16px;color:blue;'>Welcome...!</span>", //當(dāng)信息有禁止內(nèi)容時(shí)顯示 "ban" => array('法輪功', '共產(chǎn)黨', '李洪志', 'fuck', '叼', '你媽的', '他媽的'), //關(guān)鍵字 "keywords"=>"Welcome...!", //發(fā)言提示 "hereyourwords" => "在這里發(fā)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") $font = "宋體"; else if ($font == "heiti") $font = "黑體"; else if ($font == "kaiti") $font = "楷體_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]; $content = str_replace(array("\n","\r"),"",$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)?"<span style='{$style}'>{$content}</span>":$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('<img src="smilies/ani_wink.gif" />', '<img src="smilies/big_eyes.gif" />', '<img src="smilies/cool.gif" />', '<img src="smilies/cry.gif" />', '<img src="smilies/eye_roll.gif" />', '<img src="smilies/grin.gif" />', '<img src="smilies/happy.gif" />', '<img src="smilies/not_impressed.gif" />', '<img src="smilies/smile.gif" />', '<img src="smilies/smile_eyes.gif" />', '<img src="smilies/stickout.gif" />', '<img src="smilies/straight.gif" />', '<img src="smilies/surprised.gif" />', '<img src="smilies/unhappy.gif" />', '<img src="smilies/wink.gif" />'), $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, LOCK_EX)) { @fputs($fp,$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(); $l = str_replace(array("\n","\r"),"",$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(); $l = str_replace(array("\n","\r"),"",$lines[$i]); if (strpos($l,"|") === false) continue; $arr = explode("|",$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) { $l = str_replace(array("\r","\n"),"",$l); if (strpos($l,"|") === 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 { ?>
以上就是使用php+ajax怎么實(shí)現(xiàn)一個(gè)實(shí)時(shí)聊天室功能,小編相信有部分知識(shí)點(diǎn)可能是我們?nèi)粘9ぷ鲿?huì)見(jiàn)到或用到的。希望你能通過(guò)這篇文章學(xué)到更多知識(shí)。更多詳情敬請(qǐng)關(guān)注億速云行業(yè)資訊頻道。
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