php網站怎麼寫一個聊天
2020-07-16 10:06:46
1、資料庫建立
create table chat ( chattime datetime, nick char(10), words char(150) );
login.php
<html> <head> <title>使用者登入</title> <meta charset="utf-8"> </head> <body>請輸入您的暱稱<br> <form action="main.php" method="post" target="_self"> //點選登入後跳轉到main.php，並將輸入的資料用post的方式傳送過去 <input type="text" name="nick" cols="20"> <input type="submit" value="登入"> </body> </html>
main.php
<?php session_start(); $_SESSION['nick'] = $_POST['nick']; //獲取login.php傳送過來的資料，也就是使用者暱稱，並將它儲存在session中用於對使用者進行跟蹤 ?> <html> <frameset rows="80%, 20%"> <frame src="cdisplay.php" name="chatdisplay"/> // 聊天資訊展示區 <frame src="speak.php" name="speak"/> //發言區 </frameset> </html>
speak.php
<html>
<head>
<title>發言</title>
<meta charset="utf-8">
</head>
<body>
<?php
session_start(); //如果設定北京時間，需要加上 date_default_timezone_set('PRC');
if ($_POST['words']) {
$conn = mysql_connect("127.0.0.1","root","******"); //連線資料庫
mysql_select_db("yuema", $conn);
$time = date(y).date(m).date(d).date(h).date(i).date(s); //當前時間
$nick = $_SESSION['nick'];
$words = $_POST['words'];
$str = "insert into chat(chattime, nick, words) values('$time', '$nick', '$words');";
mysql_query($str, $conn); //將使用者名稱，時間和發言內容進行插入
mysql_close($conn);
}
?>
<form action="speak.php" method="post" target="_self">
<input type="text" name="words" cols="20">
<input type="submit" value="發言">
</form>
</body>
</html>cdisplay.php
<html>
<head>
<title>顯示使用者發言</title>
<meta http-equiv="refresh" content="5;url=cdisplay.php"> //設定每隔5秒鐘重新整理一次
</head>
<body>
<?php
$conn = mysql_connect("127.0.0.1", "root", "******");
mysql_select_db("yuema", $conn);
$str = "select * from chat order by chattime;";
$result = mysql_query($str, $conn);
$rows = mysql_num_rows($result);
mysql_data_seek($result, $rows-15); //取最近插入的15條資料
if ($rows<15)
$l = $rows;
else
$l = 15;
for ($i = 1; $i <= $l; $i++) { //輸出這15條資料
list($chattime, $nick, $words) = mysql_fetch_row($result);
echo $chattime;
echo " ".$nick." ";
echo $words;
echo "<br>";
}
?>
</body>
</html>結果展示
2. ajax獲取，不重新整理頁面
login.php
<html> <head> <title>使用者登入</title> <meta charset="utf-8"> </head> <body>請輸入您的暱稱<br> <form action="main.php" method="post" target="_self"> //點選登入後跳轉到main.php，並將輸入的資料用post的方式傳送過去 <input type="text" name="nick" cols="20"> <input type="submit" value="登入"> </body> </html>
main.php
<?php session_start(); $_SESSION['nick'] = $_POST['nick']; //獲取login.php傳送過來的資料，也就是使用者暱稱，並將它儲存在session中用於對使用者進行跟蹤 ?> <html> <frameset rows="80%, 20%"> <frame src="cdisplay.php" name="chatdisplay"/> // 聊天資訊展示區 <frame src="speak.php" name="speak"/> //發言區 </frameset> </html>
speak.php
<html>
<head>
<title>發言</title>
<meta charset="utf-8">
</head>
<body>
<?php
session_start(); //如果設定北京時間，需要加上 date_default_timezone_set('PRC');
if ($_POST['words']) {
$conn = mysql_connect("127.0.0.1","root","******"); //連線資料庫
mysql_select_db("yuema", $conn);
$time = date(y).date(m).date(d).date(h).date(i).date(s); //當前時間
$nick = $_SESSION['nick'];
$words = $_POST['words'];
$str = "insert into chat(chattime, nick, words) values('$time', '$nick', '$words');";
mysql_query($str, $conn); //將使用者名稱，時間和發言內容進行插入
mysql_close($conn);
}
?>
<form action="speak.php" method="post" target="_self">
<input type="text" name="words" cols="20">
<input type="submit" value="發言">
</form>
</body>
</html>cdisplay.php
<html>
<head>
<meta charset="utf-8">
<title>顯示使用者發言</title>
<script type="text/javascript" src="jquery.js"></script> //jquery庫，jquery.js可以在網上下載
<script type="text/javascript">
setInterval('show()', 3000); // 設定自動重新整理時間 3000毫秒也就是3秒鐘
function show() {
$.ajax({
url:'server_get.php', //請求傳送到server_get.php進行處理
type:'post',
dataType:'html',
error:function() {
alert('請求失敗，請稍後再試');
},
success:function(msg) {
$('p').html(msg); //設定body中p標籤的內容
}
});
}
</script>
</head>
<body>
<p></p>
</body>
</html>server_get.php
<?php
$conn = mysql_connect("127.0.0.1", "root", "******");
mysql_select_db("yuema", $conn);
$str = "select * from chat order by chattime;";
$result = mysql_query($str, $conn);
$rows = mysql_num_rows($result);
mysql_data_seek($result, $rows-15);
if ($rows < 15)
$l = $rows;
else
$l = 15;
$string = "";
for ($i = 1; $i <= $l; $i++) {
list($chattime, $nick, $words) = mysql_fetch_row($result);
$string.=$chattime;
$string.=" ";
$string.=$nick;
$string.=" ";
$string.=$words;
$string.="<br>";
}
echo $string;
?>以上就是php網站怎麼寫一個聊天的詳細內容，更多請關注TW511.COM其它相關文章！