php Ŀ¼ºÍÎļþ²Ù×÷

<?php
//н¨Ä¿Â¼
mkdir("/path/to/my/dir", 0700); //0700±íʾȨÏÞ×î´ó
//ɾ³ýĿ¼
rmdir("/path/to/my/dir");
//±éÀúĿ¼
$p =dir(/etc/php5);
echo "handler:".$p->handler;
while(false!=$entry=$p->read()){
    echo $entry."\n" ;
}
$p->close();
//Êä³öÎļþÄÚÈÝ
$handle=@fopen("/tmp/file.txt","r");  //fopenÒ²¿ÉÒÔ´ò¿ªÒ»¸öurl
if($handle){
   while(!feof($handler)){
       echo fgets($handler,4096);
   }
}
//¶þ½øÖÆÐÎʽ´ò¿ª
$filename="/tmp/file.txt";
$handle=@fopen($filename,"b");?>
if($handler){
    $content=fread($handler,filesize($filename));
    fclose($handler);
    echo $content;
}
//»ñµÃurlÄÚÈÝ
$html=file_get_contents(http://www.baidu.com);
echo $html;