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对php定义每天发生的事件感兴趣的小伙伴，下面一起跟随脚本之家 jb51.cc的小编两巴掌来看看吧！
我用这段代码每天自动给网站更换一副背景图片存入数据库
<?PHP
/**
* php定义每天发生的事件
*
* @param
* @author 脚本之家 jb51.cc jb51.cc
**/
// ==========================================================================
// Creates a file on the server with the day of the month.
// If the day in the file doesn't match today's date,then do 'event' and update the file.
//
// I use this to change the daily featured photos from a sql database.
// ==========================================================================
$dates = (idate("d"));
$mydate = "getdates.txt";
$fh = fopen($mydate,"r");
$theDate = fread($fh,5);
fclose($fh);
if ($dates <> $theDate){
// Doesn't match what's in the file,so must be a new day. Update file.
$fp = fopen('getdates.txt',w);
fwrite($fp,$dates);
fclose($fp);
// Do something.
}
// Else ignore.
?>
EXAMPLE USE:
$query = "SELECT * FROM `photo_user` WHERE `idno` >'0'";
$result = mysql_query($query) or die(mysql_error());
while($noticia = mysql_fetch_array($result))
{
// Get total records
$total = $total +1;
}
// Get current selected user from file.
$myFile = "getuser.txt";
$fh = fopen($myFile,"r");
$theData = fread($fh,5);
fclose($fh);
$userNo = $theData;
// Get today's date.
$dates = (idate("d"));
// See what date is in the file.
$mydate = "getdates.txt";
$fh = fopen($mydate,5);
fclose($fh);
// Check to see if the dates match.
if ($dates <> $theDate){
$userNo = $userNo + 1;
if ($userNo > $total){
$userNo = 1;
}
// Write today's date to file.
$fp = fopen('getdates.txt',$dates);
fclose($fp);
// Write new user id number to file.
$fp = fopen('getuser.txt',$userNo);
fclose($fp);
}
?>
<?php
// Each day a new user is selected.
$query = "SELECT * FROM `photo_user` WHERE `idno` =' ". $userNo."'";
$result = mysql_query($query) or die(mysql_error());
?>
/*** 来自脚本之家 jb51.cc（jb51.cc） ***/
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