How to automatically generate static pages on a virtual host at regular intervals

$nowtime=time();
$pastsec = $nowtime – $_GET["t"];
if($ pastsec{
exit; //Update once every minute, the time can be adjusted by yourself
}
ob_start(); //Open the buffer
include("index.php") ;
$content = ob_get_contents(); //Get the contents of the buffer
$content .= “n> ;"; //Add the code to call the update program
file_put_contents("index.html",$content);
if (!function_exists(" file_get_contents"))
{
function file_get_contents($fn,$fs)
{
$fp=fopen($fn,"w+");
fputs($fp,$fs);
fclose($fp);
 }
}
?>

Notes: Three functions: ob_start(), ob_end_clean(), ob_get_contents() ob_start(): Opens the buffer, which is to cache the content of the static file you need to generate here; ob_get_contents(): reads the contents in the buffer. The following code is an example; ob_end_clean(): This is more important. Only after using this function, the contents of the buffer will be read;

if(file_exists("./index.htm"))//Check whether the static index.htm file exists
{
$time=time();< ;/p>
//If the file modification time is different from the current time?, direct to the htm file, otherwise regenerate htm
if($time-filemtime("./index.htm"){
header("Location:classhtml/main.htm");
}
}
//Add ob_start() at the beginning of your ;
ob_start();
//The content of the homepage is your dynamic part
//Add ob_end_clean() at the end and replace this page Output to a variable
$temp=ob_get_contents();
ob_end_clean();
//Write to file
$fp=fopen("./index.htm",'w' );
fwrite($fp,$temp) or die('Write file error');
//echo "Generating HTML completed!";
?>