Next let’s take a look at the demonstration effect:
The form interface for writing message content in the following interface:
The display interface after leaving a message :
Let’s take a look at the file structure:
index.php --- Display input box and message content
write.php ---Write data to message.txt
message.txt ---Save chat content
<?Php
//设置时区
date_default_timezone_set('PRC');
//读了内容
@$string = file_get_contents('message.txt');
//如果$string 不为空的时候执行，也就是message.txt中有留言数据
if (!empty($string)) {
//每一段留言有一个分格符，但是最后多出了一个&^。因此，我们要将&^删掉
$string = rtrim($string, '&^');
//以&^切成数组
$arr = explode('&^', $string);
//将留言内容读取
foreach ($arr as $value) {
//将用户名和内容分开
list($username, $content, $time) = explode('$#', $value);
echo '用户名为<font color="gree">' . $username . '</font>内容为<font color="red">' . $content . '</font>时间为' . date('Y-m-d H:i:s', $time);
echo '<hr />';
}
}
?>
<h1>基于文件的留言本演示</h1>
<form action="write.php" method="post">
用户名：<input type="text" name="username" /><br />
留言内容：<textarea name="content"></textarea><br />
<input type="submit" value="提交" />
</form>See Based on the content just shown, we know that when the file is stored: 1. The segments are divided into segments2. The content and the user are separated using a special symbol Let’s write write.php code to write messages to files: <?php
//追加方式打开文件
$fp=fopen('message.txt','a');
//设置时间
$time=time();
//得到用户名
$username=trim($_POST['username']);
//得到内容
$content=trim($_POST['content']);
//组合写入的字符串：内容和用户之间分开，使用$#
//行与行之间分开，使用&^
$string=$username.'$#'.$content.'$#'.$time.'&^';
//写入文件
fwrite($fp,$string);
//关闭文件
fclose($fp);
header('location:index.php');
?> Create a new text file message.txt