时间:2016-02-24 19:14 来源:
我爱IT技术网 作者:佚名
欢迎您访问我爱IT技术网,今天小编为你分享的编程技术是:【如何用PHP和mysql创建一个ShoutBox】,下面是详细的分享!
如何用PHP和mysql创建一个ShoutBox
作为一个PHP开发人员,我有时被要求作个shoutbox 。 如果同样的事情也发生在你身上,这里有一个快速指南。显然,您要为它添加您自己的CSS在上面,但这里是基本思路。我们需要一个MySQL数据库表和三个PHP文件。
首先,我们需要一个文件保存数据库信息
--- 文件 #1: mysql.inc.php ---
<?php # Simply Shouting - a shoutbox example # File name: mysql.inc.php # Description: A file to hold database info. $host ='localhost'; $user ='database_user_name'; $password='database_user_password'; $name ='database_name'; ?> |
创建一个有四个字段的数据表. 我们命名为shouts. 此前可能你没有这个SQL文件, 创建一个PHP文件"install.php". 这个文件用过一次之后,记得要删除它!
-- 文件 #2: install.php --
<?php # Simply Shouting - a shoutbox example # File name: mysql.inc.php # Description: A file to hold database info. $host ='localhost'; $user ='database_user_name'; $password='database_user_password'; $name ='database_name'; ?> |
创建一个有四个字段的数据表. 我们命名为shouts. 此前可能你没有这个SQL文件, 创建一个PHP文件"install.php". 这个文件用过一次之后,记得要删除它!
-- 文件 #2: install.php --
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<?php # Simply Shouting - a shoutbox example # File name: install.php # Description: Creates the database table.
// include the database info file include("mysql.inc.php");
//连接数据库
$connection=@mysql_connect($host, $user, $password) or die(mysql_error()); $db=@mysql_select_db($name,$connection) or die(mysql_error());
//如果我们已经有一个表名字叫做"shouts", 需要先删除它 $sql='DROP TABLE IF EXISTS `shouts`'; $result=@mysql_query($sql,$connection) or die(mysql_error());
// 现在确定没有相同名字的表, 创建它 $sql='CREATE TABLE `shouts` ( `id` int(11) NOT NULL auto_increment, `timestamp` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, `shoutby` varchar(50) default NULL, `shout` varchar(50) default NULL, PRIMARY KEY `id` (`id`) ) TYPE=MyISAM AUTO_INCREMENT=1' ; echo 'Creating table: \'shouts\'....'; // 关闭连接 $result=@mysql_query($sql,$connection) or die(mysql_error()); ?> <html> <head> <title>Simply Shouting - 安装</title> </head> <body> <br /> 你的安装过程已经完成. 请立即从你的服务器上删除所有安装文件. 本程序包含以下安装文件:<br /> <br /> 1) install.php <br /> <br /> <br /> <!-- I could just send them to index.php automatically, but then they'd wonder if it created correctly or not. --> 点击 <a href=http://www.chinaz.com/program/2008/0702/"index.php">这里</a>开始.</html>
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这是主文件:
--- 文件 #3: index.php ---
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<? # Simply Shouting - a shoutbox example # File name: index.php # Description: Main page to display our shouts.
//包含数据库信息 include_once("mysql.inc.php"); //连接数据库 $connection=@mysql_connect($host, $user, $password) or die(mysql_error()); $db=@mysql_select_db($name,$connection) or die(mysql_error()); ?> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"><style type="text/css"> <!-- body,td,th { font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; } --> </style><body> <div style="width:500px;height 400px; border:thin groove #519554;"> <? // 显示最新10条留言. 首先,初始化一个计数器 $counting=0;
// we need a counter because I want to show our shouts in ASC order // (like a chat room)
$sql=mysql_query("SELECT * FROM `shouts`"); while($data=mysql_fetch_array($sql)){ //counts every row $counting=$counting + 1; } //end while
// if the count comes back greater than 10, then we select the last // 10 shouts for display.
if($counting > 10){ $countlessten=$counting - 9; $sql=mysql_query("SELECT * FROM `shouts` ORDER BY `shouts`.`id` ASC LIMIT $countlessten,10"); }else{ //else it doesn't matter, there's less than 10! $sql=mysql_query("SELECT * FROM `shouts` ORDER BY `shouts`.`id` ASC LIMIT 10"); } while($data=mysql_fetch_array($sql)){ //my timestamp field in the database is basically useless to me unless //I parse it. The following code parses the timestamp into things I //can use. $timestamp=$data['timestamp']; $postedyear=substr($timestamp,0,4); $postedmonth=substr($timestamp,5,2); $postedday=substr($timestamp,8,2); $postedtime=substr($timestamp,11,5); $newpostedtime=""; $nomilitary=substr($postedtime,0,2);
// the hour is greater than 12, so we need to switch back to 1-12 and // add a "pm" if($nomilitary >=13){ $nomilitary=$nomilitary - 12 ; $newpostedtime=$nomilitary ; $newpostedtime .=":" ; $newpostedtime .=substr($postedtime,3,2) ; $newpostedtime .=" pm"; } if($newpostedtime !=""){ $postedtime=$newpostedtime; }else{ $postedtime .=" am"; } //now that we have the time, let's get the shout and the shouter
$shoutby=$data['shoutby']; $shout=$data['shout']; echo $postedmonth . "/" . $postedday . "/" . $postedyear . " at " . $postedtime ." - <strong>" . $shoutby . " said: </strong>" . $shout . "<br><br>"; // looks like: 12/1/2008 at 5:02pm - Josh said: Yo Yo Yo! } //below is the HTML form for creating the shouts ?> <form id="newshout" name="newshout" action="newshout.php" method="post"><input name="shoutby" type="text" id="shoutby" onClick="javascript:this.value=''" value="Enter your name here" size="24" maxlength="50" /> <br><br><input name="shout" type="text" id="shout" onClick="javascript:this.value=''" value="Click & Shout!" size="24" maxlength="50" /> <br><br><input id="submit" name="submit" type="submit" value="Shout!" /></form> </div> </body> </html>
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最后, 我们需要一个 PHP 文件处理表单.
-- 文件#4: newshout.php --
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<? # Simply Shouting - a shoutbox example # File name: newshout.php # Description: Process the HTML form on index.php and redirect.
//得到留言者姓名 $shoutby=$_POST['shoutby']; if($shoutby=="Enter your name here"||$shoutby==""){ //如果没有输入名字 $shoutby="Visitor"; } if($_POST['shout']){ // 留言信息 if($_POST['shout'] !="Click & Shout!"){ //they didn't shout the default, so continue processing $shout=$_POST['shout']; //替换掉"<"和">"以阻止黑客 $shout=str_replace("<", " ", $shout); $shout=str_replace(">", " ", $shout); // 包含数据信息 include_once("dbaccess.php"); // 连接数据库 $connection=@mysql_connect($host, $user, $password) or die(mysql_error()); $db=@mysql_select_db($name,$connection) or die(mysql_error()); // 插入留言信息到数据库 $sql="INSERT INTO `shouts`(`shoutby`,`shout`) VALUES('$shoutby','$shout')"; //关闭连接 $result=@mysql_query($sql,$connection); } } ?> <html> <head> </head> <body onLoad="window.open('index.php','_self')"> </body> </html>
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