Trying to upload multiple files in PHP - php

Question

I've been struggling with this for a while now and hoping someone can point me in the right direction. I have a script that works for uploading a single image. I'm now trying to amed it so that I can update more than 1 file at once. 2 in the example below. I understand that name needs to be an array and I loop through them however I only seem to be encountering errors. I've read and tried various different things.
I either was able to upload one file but not the second, upload no files or a blank white screen.
Below is what I'm currently working with after having various edits.
<?php
$upload_dir= 'training/trainingDocuments';
$numUploads = 2;
$msg = 'Please select files for uploading';
$errors = array();
if(isset($_FILES['myTrainingFile']['tmp_name']))
{
for($i=0; $i < count($_FILES['myTrainingFile']['tmp_name']);$i++)
{
$fileName = $_FILES['myTrainingFile']['name'][$i];
$tempName = $_FILES['myTrainingFile']['tmp_name'][$i];
$blacklist = array('exe','php','jsp','js','bat','asp','aspx','com','dmg');
$a = explode('.', $fileName);
$fileExt = strtolower(end($a)); unset($a);
$fileSize = $_FILES['myTrainingFile']['size'];
if(in_array($fileExt, $blacklist) === true){
$errors[] = "File type not allowed";
}
//$newPath = $general->fileNewPath($path, $fileName);
$newPath = "training/trainingDocuments/" . $_FILES['myTrainingFile']['name'][$i];
$moveFileResult = move_uploaded_file($tempName, $newPath);
if($moveFileResult != true){
$errors[] = 'Upload Failed - MOVE';
}
$comments = htmlentities(trim($_POST['comments']));
$category = htmlentities(trim($_POST['category']));
//insert into db
$training->uploadDocument($fileName, $category, $comments);
if(!is_uploaded_file($_FILES['myTrainingFile']['name'][$i]))
{
$errors[] = 'Uploading '.$_FILES['myTrainingFile']['name'][$i] . 'failed -.-';
}
}
}
?>
Thanks for any help!

Answer 1

Try this code, i added a function named convert_files, so you can handle your uploads in a better way
Code:
<?php
$upload_dir = "training/trainingDocuments";
$numUploads = 2;
$msg = "Please select file(s) for uploading";
$errors = array();
// how many files you want to upload
$maxFiles = 3;
if ( $files = convert_files( $_FILES["myTrainingFile"] ) ) {
foreach( $files as $i => $file ) {
$fileName = $file["name"];
$tempName = $file["tmp_name"];
$fileSize = $file["size"];
// get file extension, and do strtolower
$fileExt = strtolower( pathinfo( $fileName, PATHINFO_EXTENSION ) );
// invalid file types
$blacklist = array( 'exe','php','jsp','js','bat','asp','aspx','com','dmg' );
// new path to upload current file
$newPath = "training/trainingDocuments/".$fileName;
// Check whether its a valid file or invalid file
if ( in_array( $fileExt, $blacklist ) ) {
// invalid file type, add error
$errors[$i] = "File type not allowed";
}
if ( !is_uploaded_file( $tempName ) ) {
// its'' not an uploaded file, add error
$errors[$i] = "Uploading ".$fileName." failed -.-";
}
if ( file_exists( $newPath ) ) {
// file already exists in your directory, add error
$errors[$i] = "File ".$fileName." already exists";
// if you dont want to add error, (adding an error will not upload file)
// just comment above line, and uncomment below line
/*
// get the filename without extension
$name = pathinfo( $fileName, PATHINFO_FILENAME );
//create new file name
$fileName = $name."_".uniqid().".".$fileExt;
//update upload path
$newPath = "training/trainingDocuments/".$fileName;
*/
}
// make sure $errors[$i] contains any errors
if ( isset( $errors[$i] ) ) {
// errors occured, so continue to next file
continue;
}
if ( !move_uploaded_file( $tempName, $newPath ) ) {
$errors[$i] = "Upload Failed - MOVE"; // failed to move file
}
$comments = htmlentities( trim( $_POST['comments'] ) );
$category = htmlentities( trim( $_POST['category'] ) );
// Upload document
$training->uploadDocument( $fileName, $category, $comments );
// check maximum allowed files limit exceeded
if ( ( $i + 1 ) == $maxFiles ) {
// limit exceeded, break the execution
break;
}
}
}
?>
Function:
<?php
function convert_files( $files ) {
if ( is_array( $files ) && !empty( $files["name"] ) ) {
if ( is_array( $files["name"] ) ) {
$merged = array();
foreach( $files["name"] as $i => $name ) {
$merged[] = array(
"name" => $name,
"type" => $files["type"][$i],
"size" => $files["size"][$i],
"error" => $files["error"][$i],
"tmp_name" => $files["tmp_name"][$i]
);
}
return $merged;
}
return array( $files );
}
return false;
}
?>