如何将更改的数据存储到数据库中？
[英]How do I store changing data into a database?
问题描述
I made an application to take the now playing title and artist from an internet radio stream, and I have it displaying in plain text on this page: 
我制作了一个应用程序，用于从互联网广播流中获取正在播放的标题和艺术家，并在此页面上以纯文本形式显示它：
http://thelisthq.net/z1035.php http://thelisthq.net/z1035.php
The output is simply a php 'echo $variable' command, but $variable is constantly changing, so how do I store each different value of $variable into a database. 输出只是一个php'echo $ variable'命令，但是$ variable不断变化，因此如何将$ variable的每个不同值存储到数据库中。 The end plan to to keep a list of all the songs that play over a certain period of time. 最终计划保留一段时间内播放的所有歌曲的列表。
1 个解决方案
解决方案1
11 已采纳 2009-08-05 03:31:27
You'll have to set up the php script to run every x minutes or so, and instead of echoing the result, check the most recent database entry against the currently playing song, and if it is different, add a new record. 您必须将php脚本设置为每x分钟左右运行一次，而不是回显结果，而是对照当前播放的歌曲检查最新的数据库条目，如果不一致，则添加新记录。
First, some SQL to set up a new table: 首先，一些SQL来建立一个新表：
CREATE TABLE SongList (
ID int primary key auto_increment not null,
Song char(255) not null,
PlayTime Datetime not null
);
Then, modify your PHP script to insert records in the database instead of echoing to the screen: 然后，修改您的PHP脚本以在数据库中插入记录，而不是回显屏幕：
<?php
$song = get_song(); //not sure how you're doing that
$sql = "SELECT Song FROM SongList ORDER BY PlayTime DESC LIMIT 1";
list($prevSong) = mysql_fetch_row(mysql_query($sql));
if ($song !== $prevSong) {
$sql = "INSERT INTO SongList (Song, PlayTime) VALUES ('$song', NOW())";
mysql_query($sql);
}
?>
Set up a scheduled task or a cron job to run php -f z1035.php every minute. 设置计划任务或cron作业以每分钟运行php -f z1035.php 。
To see the entire list of songs, create a new php file station_history.php 要查看歌曲的完整列表，请创建一个新的php文件station_history.php
<html>
<body>
<pre>
<?php
$sql = "SELECT Song, PlayTime FROM SongList LIMIT 20"; // Just the last 20 songs
$result = mysql_query($sql);
while(list($song, $playtime) = mysql_fetch_row($result)) {
echo "[$playtime] $song\n";
}
?>
</pre>
</body>
</html>
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