帝国cms7.5内容随机调取（高效率简易版）

高效率函数

function user_randId($table='news'){
    global $dbtbpre,$empire;
    $filePath = ECMS_PATH . 'e/maxID'.md5($table).'.txt';  // 文件路径
    if(file_exists($filePath)) {
      $fileCreateTime = filectime($filePath);  // 获取文件创建时间（Unix 时间戳）
      $oneDayAgo = strtotime('-1 day');  // 当前时间减去一天的时间戳
    
      if ($fileCreateTime < $oneDayAgo) {
        unlink($filePath);
        $start = $empire->fetch1("select id from {$dbtbpre}ecms_{$table} where newstime <= ".time()." order by id ASC limit 1");
        $end = $empire->fetch1("select id from {$dbtbpre}ecms_{$table}  where newstime <= ".time()." order by id DESC limit 1");
        $index['min'] = $start['id'];
        $index['max'] = $end['id'];
        file_put_contents($filePath,json_encode($index));
        
      } else {
        $index = json_decode(file_get_contents($filePath),true);
      }
    } else {
      $start = $empire->fetch1("select id from {$dbtbpre}ecms_{$table}  where newstime <= ".time()." order by id ASC limit 1");
      $end = $empire->fetch1("select id from {$dbtbpre}ecms_{$table}  where newstime <= ".time()." order by id DESC limit 1");
      $index['min'] = $start['id'];
      $index['max'] = $end['id'];
      file_put_contents($filePath,json_encode($index));
    }
    $randnum=300; //随机数量 
    $randids=''; 
    $randdh=''; 
    for($i=1;$i<=$randnum;$i++) 
    { 
    $randids.=$randdh.rand($index['min'],$index['max']); //1为最小ID，100000为最大ID 
    $randdh=',';
    } 
    return $randids;
}

支持不同数据表的查询，默认为news表，调用方式为：

<? $randids = user_randId('news1');?>
[ecmsinfo]3,8,32,0,0,15,0,"id in ($randids)"[/ecmsinfo]

高效率代码第二版：

第二版可谓是更加智能，采用了缓存的技术，巴适

<ul>
<?php 
$filePath = ECMS_PATH . 'e/maxID.txt';  // 文件路径

if(file_exists($filePath)) {
	$fileCreateTime = filectime($filePath);  // 获取文件创建时间（Unix 时间戳）
	$oneDayAgo = strtotime('-1 day');  // 当前时间减去一天的时间戳

	if ($fileCreateTime < $oneDayAgo) {
		unlink($filePath);
		$start = $empire->fetch1("select id from {$dbtbpre}ecms_news where newstime <= ".time()." order by id ASC limit 1");
		$end = $empire->fetch1("select id from {$dbtbpre}ecms_news  where newstime <= ".time()." order by id DESC limit 1");
		$index['min'] = $start['id'];
		$index['max'] = $end['id'];
		file_put_contents($filePath,json_encode($index));
		
	} else {
		$index = json_decode(file_get_contents($filePath),true);
	}
} else {
	$start = $empire->fetch1("select id from {$dbtbpre}ecms_news  where newstime <= ".time()." order by id ASC limit 1");
	$end = $empire->fetch1("select id from {$dbtbpre}ecms_news  where newstime <= ".time()." order by id DESC limit 1");
	$index['min'] = $start['id'];
	$index['max'] = $end['id'];
	file_put_contents($filePath,json_encode($index));
}
$randnum=32; //随机数量 
$randids=''; 
$randdh=''; 
for($i=1;$i<=$randnum;$i++) 
{ 
$randids.=$randdh.rand($index['min'],$index['max']); //1为最小ID，100000为最大ID 
$randdh=',';
} 
?>      

	[e:loop={0,10,3,0,"id in ($randids)"}] 
	<li>
		<a href="<?=$bqsr['titleurl']?>" title="<?=$bqr['title']?>" target="_blank"><?=$bqr['title']?></a>
	</li>
	[/e:loop]
	
</ul>