php读文件的4中方法。
fopen
$fp = fopen("download.php","rb");while(!feof($fp)){echo "fopen: ".fgets($fp);}fclose($fp);
$lines = file("download.php");foreach($lines as $line){echo "file: ".$line;}
$content = file_get_contents("download.php");echo "get_contents: ".$content;
echo "readfile: ";readfile("download.php");flush();