function uploadFile()
{
$uploadFileTimeStart = microtime(true);
$target_dir = "C:\\xampp\\htdocs\\BEPROJECT\\Html\\Text/";
$my_file = $_FILES["fileToUpload"]["name"];
$target_file = $target_dir . basename($my_file);
$FileType = pathinfo($target_file, PATHINFO_EXTENSION);
try {
// Undefined | Multiple Files | $_FILES Corruption Attack
if (!isset($_FILES['fileToUpload']['error']) || is_array($_FILES['fileToUpload']['error'])) {
throw new RuntimeException('<h2>Invalid parameters.</h2>');
}
// Check $_FILES['fileToUpload']['error'] value.
switch ($_FILES['fileToUpload']['error']) {
case UPLOAD_ERR_OK:
break;
case UPLOAD_ERR_NO_FILE:
throw new RuntimeException('<h2>No file sent.</h2>');
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
throw new RuntimeException('<h2>Exceeded filesize limit.</h2>');
default:
throw new RuntimeException('<h2>Unknown errors.</h2>');
}
// Check if file already exists
if (file_exists($target_file)) {
throw new RuntimeException('<h2>File Already Exist in root directory.</h2>');
}
// Allow certain file formats
if ($FileType != "txt") {
throw new RuntimeException('<h2>Only Text files Allowed!</h2>');
}
//check filesize.
if ($_FILES['fileToUpload']['size'] > 1000000) {
throw new RuntimeException('<h2>Exceeded filesize limit.</h2>');
}
//obtain safe unique name from its binary data.
if (!move_uploaded_file($_FILES['fileToUpload']['tmp_name'], $target_file)) {
throw new RuntimeException('<h2>Failed to move uploaded file.</h2>');
}
echo '<h2>File is uploaded successfully.</h2>';
} catch (RuntimeException $e) {
echo $e->getMessage();
}
$uploadFileTimeEnd = microtime(true);
$totalTimetoUploadFiles = $uploadFileTimeEnd - $uploadFileTimeStart;
$_SESSION['uploadFile_time'] = $totalTimetoUploadFiles;
$readFileContentsTimeStart = microtime(true);
$handle = fopen("C:\\xampp\\htdocs\\BEPROJECT\\Html\\Text/" . $my_file, "r") or die('Cannot open file: ' . $my_file);
$filesize = filesize("C:\\xampp\\htdocs\\BEPROJECT\\Html\\Text/" . $my_file);
$contents = fread($handle, $filesize);
$readFileContentsTimeEnd = microtime(true);
$totalTimetoReadFiles = $readFileContentsTimeEnd - $readFileContentsTimeStart;
$_SESSION['readTextFile_time'] = $totalTimetoReadFiles;
$count_words = str_word_count($contents);
//for calculating term frequency
$words = extractCommonWords($contents, $filesize);
//extracting keywords
$id = getID($my_file, $filesize);
//generating id
toDatabase($id, $words, $count_words);
//inserting to database
display($my_file, $contents);
//displaying final contents
}
function readContents($filename, $FileType)
{
$readFileContentsTimeStart = microtime(true);
$var = $FileType;
$myfile = $filename . "_" . $var . ".txt";
//extracting contents of entire mumtimedia
$actualName = $filename . "." . $FileType;
$fullhandle = fopen("C:\\xampp\\htdocs\\BEPROJECT\\Html\\Multimedia/" . $actualName, "r") or die("cannot create file!");
$fullFilesize = filesize("C:\\xampp\\htdocs\\BEPROJECT\\Html\\Multimedia/" . $actualName);
$fullContents = fread($fullhandle, $fullFilesize);
encryptData($fullContents, $actualName);
//extracting contents of text enter while uploading MM
$contents = $_POST['comment'];
$handle = fopen("C:\\xampp\\htdocs\\BEPROJECT\\Html\\Multimedia/" . $myfile, "w") or die("cannot create file!");
fwrite($handle, $contents);
$filesize = filesize("C:\\xampp\\htdocs\\BEPROJECT\\Html\\Multimedia/" . $myfile);
$readFileContentsTimeEnd = microtime(true);
$totalTimetoReadFiles = $readFileContentsTimeEnd - $readFileContentsTimeStart;
$_SESSION['readMMFile_time'] = $totalTimetoReadFiles;
$count_words = str_word_count($contents);
//for calculating term frequency
$words = extractCommonWords($contents, $filesize);
//extracting keywords
$id = getID($myfile, $filesize);
//generating id
toDatabase($id, $words, $count_words);
//inserting to database
display($myfile, $contents, $filesize);
//displaying final contents
}