PHP 파일 시스템 함수 정리

// http://www.gnu.org/licenses/gpl-3.0.txt
$filename = "test.txt";

/*
fopen
resource_handle = fopen(string_filename, string_mode)
http://php.net/manual/en/function.fopen.php
- mode
r  : read, pointer Begin
r+ : read, write, pointer Begin
w  : write, erase, create new file, pointer End 
w+ : write, read, pointer End
a  : add, write, create new file, pointer End
a+ : add, write, read, pointer End
x  : creat new file, write, pointer Begin
x+ : read, write, pointer Begin
c  : write, pointer Begin
c+ : read, write, pointer Begin
*/
$handle = fopen($filename,"r"); // chmod 777 test, "D:\\test\\test.txt"
if ($handle)
{
 echo "file Opened.";
}
else
{
 die("open Failed.");
}

/*
fread
string = fread(resource_handle, int_length)
http://php.net/manual/en/function.fread.php
*/
$handle = fopen($filename,"r");
$temp = fread($handle, 100);
echo $temp;

/*
fwrite, fputs
int = fwrite(resource_handle, string, int)
int = fputs(resource_handle, string, int)
http://php.net/manual/en/function.fwrite.php
http://php.net/manual/en/function.fputs.php
*/
$handle = fopen($filename,"w");
$temp = fwrite($handle, "ABCDEFGabcあいうえお가나다라마바사");
echo $temp;
$temp = fputs($handle, "abcdefg", 3);
echo $temp;
/*
fwrite, fputs
int = fwrite(resource_handle, string, int)
int = fputs(resource_handle, string, int)
http://php.net/manual/en/function.fwrite.php
http://php.net/manual/en/function.fputs.php
*/
$handle = fopen($filename,"w");
$temp = fwrite($handle, "ABCDEFGabcあいうえお가나다라마바사");
echo $temp;
$temp = fputs($handle, "abcdefg", 3);
echo $temp;

/*
feof
bool = feof(resource_handle, int_length)
http://php.net/manual/en/function.feof.php
*/
$temp = "";
$handle = fopen($filename,"r");
while (!feof($handle))
{
 $temp .= fread($handle, 128);
}

/*
fgets
string = fgets(resource_handle, int_length)
http://php.net/manual/en/function.fgets.php
*/
while (($buffer = fgets($handle, 4096)) !== false) {
 echo $buffer;
}
if (!feof($handle)) {
 echo "Error: unexpected fgets() fail\n";
}

/*
fpassthru
int = fpassthru(resource_handle)
http://php.net/manual/en/function.fpassthru.php
*/
if (!feof($handle)) {
 header("Content-Type: text/html");
 header("Content-Length: " . filesize($file));
 fpassthru($handle);
 exit;
}

/*
readfile
int = readfile(string_filename)
http://php.net/manual/en/function.readfile.php
*/
if (file_exists($filename)) {
    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename='.basename($filename));
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($filename));
    readfile($filename);
    exit;
}

/*
fgetc
string = fgetc(resource_handle)
http://php.net/manual/en/function.fgetc.php
*/
while (!feof($handle)) {
 $char = fgetc($handle);
 echo $char . ", ";
}

/*
fgetss
string = fgetss(resource_handle)
http://php.net/manual/en/function.fgetss.php
*/
while (!feof($handle)) {
 $strip_tags = fgetss($handle);
 echo $strip_tags;
}

/*
fgetcsv
array = fgetcsv(resource_handle)
http://php.net/manual/en/function.fgetcsv.php
*/
$handle = fopen("test.csv","r");
if ($handle)
{
 while($col = fgetcsv($handle,1024,","))
 {
  $row = count($col);
  //print_r($col);
  foreach ($col as $key=>$val) {
   echo $col[$key] . ",";
  }
  echo "
";
 }
 echo "Total = " . $row;
}
else
{
 die("open Failed.");
}

/*
file
array = file(string_filename)
http://php.net/manual/kr/function.file.php
*/
$array = file("test.txt");
for ($i = 0; $i < count($array); $i++)
{
 echo $array[$i];
}
$lines = file("http://php.net/");
while (list($line_num,$line)=each($lines)) {
 echo "Line" . $line_num . " : " . htmlspecialchars($line) . "
";
}

/*
filesize
int = filesize(string_filename)
http://php.net/manual/kr/function.filesize.php
*/
$size = filesize("test.txt");
echo $size . " Bytes";

/*
file_exists
bool = file_exists(string_filename)
http://php.net/manual/kr/function.file-exists.php
*/
if (file_exists($filename)) {
    echo "The file $filename exists";
} else {
    echo "The file $filename does not exist";
}

/*
is_executable
bool = is_executable(string_filename)
http://php.net/manual/kr/function.is-executable.php
*/
if (is_executable($filename)) {
    echo $filename.' is executable';
} else {
    echo $filename.' is not executable';
}

/*
is_writable
bool = is_writable(string_filename)
http://php.net/manual/kr/function.is-writable.php
*/
if (is_writable($filename)) {
    echo $filename.' is writable';
} else {
    echo $filename.' is not writable';
}

/*
copy
bool = copy(string_source, string_dest)
http://php.net/manual/kr/function.copy.php
*/
$file = "test.txt";
$newfile = "test.bak";

if (!copy($file, $newfile)){
    echo "failed to copy $file...\n";
}

/*
rename
bool = rename(string_oldname, string_newname)
http://php.net/manual/kr/function.rename.php
*/
rename("test.txt", "test.new.txt");

/*
unlink
bool = unlink(string_filename)
http://php.net/manual/kr/function.unlink.php
*/
unlink("test.csv");

/*
mkdir
bool = mkdir(string_pathname, int_mode)
http://php.net/manual/kr/function.mkdir.php
*/
$structure = "depth1/depth2/depth3/";
if (!mkdir($structure, 0777, true)) {
    die("Failed to create folders...");
}

/*
rmdir
bool = rmdir(string_dirname)
http://php.net/manual/kr/function.rmdir.php
*/
if (!is_dir("FolderName")) {
    mkdir("FolderName");
}
rmdir("FolderName");

/*
basename
string = basename(string_path, string_suffix)
http://php.net/manual/kr/function.basename.php
*/
echo "1) ".basename("/etc/sudoers.txt", ".txt").PHP_EOL;
echo "2) ".basename("/etc/passwd").PHP_EOL;
echo "3) ".basename("/etc/").PHP_EOL;
echo "4) ".basename(".").PHP_EOL;
echo "5) ".basename("/");

/*
dirname
string = dirname(string_path)
http://php.net/manual/kr/function.dirname.php
*/
echo "1) " . dirname("/etc/passwd/test.txt") . PHP_EOL; // 1) /etc/passwd
echo "2) " . dirname("/etc/passwd") . PHP_EOL; // 1) /etc
echo "3) " . dirname("/etc/") . PHP_EOL; // 2) / (or \ on Windows)
echo "4) " . dirname("."); // 3) .

/*
pathinfo
array = pathinfo(string_path)
http://php.net/manual/kr/function.pathinfo.php
*/
$path_parts = pathinfo('/www/htdocs/inc/lib.inc.php');

echo $path_parts['dirname'], "
";   // folder name
echo $path_parts['basename'], "
";  // file + extension name
echo $path_parts['extension'], "
"; // extension name
echo $path_parts['filename'], "
";  // file name

/*
rewind
bool = rewind(resource_handle)
http://php.net/manual/kr/function.rewind.php
*/
$handle = fopen('test.txt', 'r+');
fwrite($handle, 'Really long sentence.');
rewind($handle);
fwrite($handle, 'Foo');
rewind($handle);
echo fread($handle, filesize('test.txt'));
rewind($handle);
echo fgets($handle);

/*
fseek
int = fseek(resource_handle, int_offset)
http://php.net/manual/kr/function.fseek.php
*/
$handle = fopen('test.txt', 'r');

while (!feof($handle)) {
 echo fgets($handle, 4096);
}
rewind($handle);
echo fgets($handle);
// move next 10 byte
fseek($handle, 10, SEEK_SET);
echo fgets($handle);
// from now point. move next 5 byte
fseek($handle, 5, SEEK_CUR); 
echo fgets($handle);
// from end point. move prev 10 byte
fseek($handle, -10, SEEK_END); 
echo fgets($handle);

/*
ftell
int = ftell(resource_handle)
http://php.net/manual/kr/function.ftell.php
*/
$handle = fopen($filename, "r");
echo ftell($handle); // 0
echo fgets($handle,7);
echo ftell($handle); // 6

/*
parse_ini_file
array = parse_ini_file(string_filename)
http://php.net/manual/kr/function.parse-ini-file.php
*/
define('BIRD', 'Dodo bird');
// Parse without sections
$ini_array = parse_ini_file("test.ini");
print_r($ini_array);
// Parse with sections
$ini_array = parse_ini_file("test.ini", true);
print_r($ini_array);

/*
is_uploaded_file
bool = is_uploaded_file(string_filename)
http://php.net/manual/kr/function.is-uploaded-file.php
*/

 
 

if (is_uploaded_file($_FILES['uploadedfile']['tmp_name'])) {
   echo "File ". $_FILES['uploadedfile']['name'] ." uploaded successfully.\n";
   echo "Displaying contents\n";
   readfile($_FILES['uploadedfile']['tmp_name']);
} else {
   echo "Possible file upload attack: ";
   echo "filename '". $_FILES['uploadedfile']['tmp_name'] . "'.";
}

/*
move_uploaded_file
bool = move_uploaded_file(string_filename, string_destination)
http://php.net/manual/kr/function.move-uploaded-file.php
*/
$uploads_dir = 'iglu';
if (is_uploaded_file($_FILES["uploadedfile"]["tmp_name"]))
{
 //print_r($_FILES);
 echo "file name : " . $_FILES["uploadedfile"]["name"];
 echo "file size : " . $_FILES["uploadedfile"]["size"];
 echo "file type : " . $_FILES["uploadedfile"]["type"];
 echo "temp name : " . $_FILES["uploadedfile"]["tmp_name"];
 //save path
 $dest = $uploads_dir . "/" . $_FILES["uploadedfile"]["name"];
 //save file
 if (move_uploaded_file($_FILES["uploadedfile"]["tmp_name"], $dest))
 {
  echo "MOVED SUCCESS!";
 }
 else
 {
  die("MOVED Failed!");
 }
}
else
{
 die("NO FILE");
}

/*
fclose
bool = fclose(resource_handle)
http://php.net/manual/en/function.fopen.php
*/
$tf = fclose($handle);
if($tf)
{
 echo "
file Closed.";
}
else
{
 echo "
close Failed.";
}