Simple example of generating static files with PHP

/**
* @desc Used when generating static files
* @todo htmlcache
* @param $root string html file storage path
* @param $rule string html file naming rules
* @param $url string ** that needs to generate HTML files Page address
* @return boole true/false
*/
public function setHtmlCache($root,$rule,$url){
//Detect whether static files have been generated
if (file_exists($root. $rule.'.html')){//Static files already exist
@unlink($root.$rule.'.html');//Delete static files
return file_put_contents($root.$rule.'.html ', file_get_contents($url));//Regenerate
}else{//If there is no static file, generate it directly
return file_put_contents($root.$rule.'.html', file_get_contents($url));
}
 }