PHP function to read directories and files and display them_PHP tutorial

读取指定的目录，并显示其中的文件个数和文件名。

/*
This script read the filenames from a specified directory and returns them in an array.

*/
Function searchdir($basedir)
{
global $filelisting, $number; //defines the two variables as global so they can be accessed
unset($filelisting); //kills $filelisting in case it have been used earlier in the
unset($number); //same as above
$handle=opendir($basedir);
while ($file = readdir($handle)) {
if ($file=="." or $file=="..") {
} else {
$filelisting[]="$basedir$file";
};
};
$number=sizeof($filelisting); //取得文件个数
};
searchdir("."); //runs the function to search the current directory
echo $filelisting[1]; //echos the second value in the array
echo $number; //echos the size of the array
?>