Wordpress: PHP multiple file upload - php

Question

I have a HTML form for a file upload, which sends the uploaded file to the backend directory of my wordpress site. How can I enable multiple file uploads? I tried simply adding multiple="multiple" to my file upload form (which allowed me to select multiple files) but in the directory only one file is uploaded. Here is the form:
<form action="http://www.aerex.co.uk/php-upload/" method="post" enctype="multipart/form-data">
Select image to upload:
<input type="file" name="fileToUpload" id="fileToUpload" multiple="multiple">
<input type="submit" value="Upload Image" name="submit">
</form>
The PHP for the action page:
<?php
$target_dir = $_SERVER['DOCUMENT_ROOT'] . '/wp-content/uploads/';
$target_file = $target_dir . '/' . basename($_FILES["fileToUpload"]["name"]);
move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file);
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
} else {
echo "File is not an image.";
$uploadOk = 0;
}
}
?>

Answer 1

You change this
<form action="http://www.aerex.co.uk/php-upload/" method="post" enctype="multipart/form-data">
Select image to upload:
<input type="file" name="fileToUpload[]" id="fileToUpload" multiple="multiple">
<input type="submit" value="Upload Image" name="submit">
</form>
and your php
$target_dir = $_SERVER['DOCUMENT_ROOT'] . '/wp-content/uploads/';
if(isset($_POST) and $_SERVER['REQUEST_METHOD'] == "POST"){
foreach ($_FILES['fileToUpload']['name'] as $f => $name) {
if(isset($_POST["submit"])) {
$target_file = $target_dir . '/' . basename($_FILES["fileToUpload"]["name"][$f]);
move_uploaded_file($_FILES["fileToUpload"]["tmp_name"][$f], $target_file);
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
$check = getimagesize($target_file);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
} else {
echo "File is not an image.";
$uploadOk = 0;
}
}
}
}