PHP gets all the files in the directory and sorts them by time

PHP gets all the file names in the directory

1. First open the directory to operate and point to it with a variable
Open the subdirectory under PIC under the current directory common.
$handler = Opendir (' Pic/common ');
2. Read all files in the directory under the loop
/* Where $filename = Readdir ($handler) assigns the read file name to the $filename each time the loop is cycled, so that $filename!== false in order not to be trapped in a dead loop. Be sure to use!==, because if a filename is called ' 0′, or if some of the systems think it is false, the!= will stop the loop.
while (($filename = Readdir ($handler))!== false)
{
3, the directory will have two files, the name is '. ' and '.. ', do not operate on them
if ($filename!= "." && $filename!= "...")
{
4, to deal with
Here it simply uses echo to output the file name
echo $filename;
}
}
5, close the directory
Closedir ($handler);

php gets all the files in the directory and sorts them by file creation time, PHP is sorted by file creation/modification time

function GetFile ($dir = ' ") {
$num = 1; Used to record the number of files in the directory
$dirname = '. /testdir '; Name of directory to traverse
$dir _handle=opendir ($dirname);

while ($file =readdir ($dir _handle)) {
if ($file!= "." && $file!= "..." && $file!= "index.php") {
$key = Filectime ($file) *1000+rand (100,999); Generate key based on file creation time
$files [$key] = $file;
$num + +;
}
}
Ksort ($files);
foreach ($files as $ky => $val) {
$dirFile = $dirname. " /". $val;
$res. = Tabledata ($num. ' |<a href= '. $val. ' "target=" _blank ">". $val. ' </a>| '. FileSize ($dirFile). ' | FileType ($dirFile). ' | Date ("y/n/t h:i:s", Filemtime ($dirFile));
}
return $res;
Closedir ($dir _handle);
}