This script was a quick hack to allow a PDF to be uploaded to replace an outdated one on Clearer Conscience. As the PDF link on the site is hard-coded, the new PDF must have the same name as the old one. You can only upload a PDF. The old PDF will be renamed (as a backup), and the new PDF will be uploaded and renamed and will therefore replace the old one.
See demo page here…
<?php
session_start();
// max file upload size to be used in script in bytes - pls note upload_max_filesize setting in .ini still applies
define('FILE_SIZE_LIMIT', 1048576); // 1MB
define("UPLOAD_DIR", "pdf_uploads".DIRECTORY_SEPARATOR);
// initialise an empty array for messages
$msgArr = array();
function checkFolderExists($path)
{
$mode = 0777;
// make dir if it does not already exist
if(!is_dir($path)) {
if(mkdir($path, $mode)) {
// the mode parameter seems not to work consistently on Windows boxes
chmod($path, 0777);
return true;
}
}
return false;
}
function checkFileExists($filename)
{
if(is_file(UPLOAD_DIR.$filename)) {
return true;
}
return false;
}
if (isset($_POST['submit'])) {
// checks for errors and checks that file is uploaded
if ($_FILES['uploadedfile']['error'] == UPLOAD_ERR_OK && is_uploaded_file($_FILES['uploadedfile']['tmp_name'])) {
// array will make it easier to add other files types later if we want to (csv,htm,html,xml,css,rtf etc)
$allowedExtensions = array("pdf");
// get the file extension
$fileExtension = strtolower(substr(strrchr($_FILES['uploadedfile']['name'],'.'),1));
// check the file type - this gets the MIME type - not necessarily the best way to check, esp. for image files!!
$fileType = $_FILES['uploadedfile']['type'];
// checking the MIME type and the extension
if ($fileType == "application/pdf" && in_array($fileExtension, $allowedExtensions)) {
// get the file size
$fileSize = $_FILES['uploadedfile']['size'];
// check file size
if($fileSize > 0) {
if($fileSize <= FILE_SIZE_LIMIT) {
checkFolderExists(UPLOAD_DIR); // if it does not exist, it is created
// if easy.pdf exists, rename it...
if(checkFileExists("easy.pdf")) {
if(rename(UPLOAD_DIR."easy.pdf", UPLOAD_DIR."easy".time().".pdf")) {
$msgArr[] = 'Old PDF backed up!';
} else {
$msgArr[] = 'Could not rename old PDF!';
}
}
if(copy($_FILES['uploadedfile']['tmp_name'], UPLOAD_DIR."easy.pdf")) {
$msgArr[] = 'Success: new PDF uploaded!';
}
} else {
$msgArr[] = 'That file is too big (limit set at 1MB)!';
}
} else {
$msgArr[] = 'That file is empty!';
}
} else {
$msgArr[] = "That file type (" . $fileExtension . ") is not permitted!";
}
} else {
$msgArr[] = "No file selected or there was an error uploading your file!";
}
}
?>
<html>
<body>
<h2>Upload PDF</h2>
<p>This script was a quick hack to allow a PDF to be uploaded to replace an outdated one on a website. As the PDF link on the site is hardcoded, the new PDF must have the same name as the old one.</p>
<p>You can only upload a PDF. The old PDF will be renamed (as a back-up), and the new PDF will be uploaded and renamed and will therefore take the place of the old one.</p>
<?php
// the array is empty - there were no errors
if(!empty($msgArr)) {
// there were errors - output them
foreach($msgArr as $msg) {
echo '<p class="error">'.$msg.'</p>';
}
}
?>
<form enctype="multipart/form-data" action="upload_pdf.php" method="post">
<fieldset>
<legend>Upload PDF file:</legend>
<p><label for="uploadedfile">File:</label><input type="file" name="uploadedfile" /> (limit 1MB)</p>
<p><input name="submit" type="submit" value="submit" /></p>
</fieldset>
</form>
</body>
</html>