make a upload field using php and send the url to database - php

Question

I want to create a form to submit an image file in the front-end and send it to the wordpress upload directory and database using php ,but my php says the file is a image but dont upload it :
<div id="recibo">
<form action="" method="post" enctype="multipart/form-data">
<p>upload do recibo:
<input type="file" name="pictures[]" />
<input type="submit" value="Enviar" />
</p>
</form>
</div>
php:
<?php
$target_dir = "wp-content/uploads/recibos";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$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

There are a few things wrong here.
Firstly, the file input's name attribute is name="pictures[]" yet you are using $_FILES["fileToUpload"], those must match.
So rename it: name="fileToUpload[]"
Sidenote: Using brackets implies an array to upload multiple files; you don't need it here since the rest of your code doesn't support multiple files uploading.
Change it to name="fileToUpload"
Then your folder path:
$target_dir = "wp-content/uploads/recibos";
You have no directory seperator after recibos
This would translate to recibosFILE.JPG rather than recibos/FILE.JPG.
Change it to:
$target_dir = "wp-content/uploads/recibos/";
Make sure the folder you are uploading to has the correct permissions to write to it.
Another thing: I can't see how if(isset($_POST["submit"])) {...} would work here, since your submit button does not have the name attribute to match it with.
<input type="submit" value="Enviar" /> to <input name="submit" type="submit" value="Enviar" />
Special note:
If you do want to upload multiple files, then you will need to find yourself another script to do that and this isn't what your question is about.
See also:
PHP change the maximum upload file size
to increase upload size
Add error reporting to the top of your file(s) which will help find errors.
<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
// rest of your code
Sidenote: Displaying errors should only be done in staging, and never production.