用PHP+MySQL搭建聊天室功能實例代碼
Jun 13, 2016 am 11:59 AM
下面,以一個簡單的聊天室設計為例,介紹PHP+MySQL在網(wǎng)頁開發(fā)中的應用
1、總體設計
1.1 構(gòu)思與規(guī)劃:
聊天室的基本原理,就是把每個連上同一網(wǎng)頁的用戶傳送的發(fā)言數(shù)據(jù)儲存起來,然后將所有的發(fā)言數(shù)據(jù)傳給每一用戶。也就是說,用數(shù)據(jù)庫匯集每個人的發(fā)言,并將數(shù)據(jù)庫中的數(shù)據(jù)傳給每一個人就實現(xiàn)了聊天室的功能。
1.2 表設計
首先使用MySQL建立表chat用來儲存用戶的發(fā)言:
復制代碼 代碼如下:
mysql> CREATE TABLE chat
-> (chtime DATATIME,
-> nick CHAR(10) NOT NULL,
->words CHAR(150));
表中只設定了三個域,chtime是發(fā)言的時間,nick為發(fā)言者的昵稱,words是發(fā)言的內(nèi)容,發(fā)言最多150個字符
1.3 網(wǎng)頁設計
一個最簡單的聊天室通常需要兩個頁框:一個頁框是用戶輸入發(fā)言的表單,另一個用來顯示大家的發(fā)言。所以代碼段通常至少需要如下幾段:
建立頁框的結(jié)構(gòu)(main.php)
顯示大家發(fā)言的程序段(cdisplay.php)
傳送用戶發(fā)言的程序段(speak.php)
用戶登錄進入聊天室程序段(login.php)
2、代碼設計
以上規(guī)劃完成后,就可以著手代碼設計了,采用php可以非常簡明實現(xiàn)以上的功能。
2.1 用戶登錄login.php,本段代碼是一個完全HTML網(wǎng)頁
復制代碼 代碼如下:
請輸入您的昵稱
完成以上工作后,一個簡單的聊天室制作就完成了。當然,設計者可以根據(jù)個人愛好做一些個性化設計,如增加一個頁框,顯示當前聊天室人員名單、增加發(fā)言表情、取得發(fā)言者IP、進一步美化頁面等等。

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