<?php

	$target_dir = "upload/";
	$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;
		}
	}

	// Check if file already exists
	if (file_exists($target_file)) 
	{
		echo "Sorry, file already exists.";
		$uploadOk = 0;
	}
	// Check file size
	if ($_FILES["fileToUpload"]["size"] > 5000000)
	{
		echo "Sorry, your file is too large.";
		$uploadOk = 0;
	}
	// Allow certain file formats
	if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg" && $imageFileType != "gif" ) 
	{
		echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
		$uploadOk = 0;
	}
	// Check if $uploadOk is set to 0 by an error
	if ($uploadOk == 0)
	{
		echo "Sorry, your file was not uploaded.";
		// if everything is ok, try to upload file
	} 
	
	else 
	{
		if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) 
		{
			echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
		} 
		else
		{
			echo "Sorry, there was an error uploading your file.";
		}
	}



?>

<!DOCTYPE html>
<html>
<body>

<form action="upload_fichier.php" method="post" enctype="multipart/form-data">
    Select image to upload:
    <input type="file" name="fileToUpload" id="fileToUpload">
    <input type="submit" value="Upload Image" name="submit">
</form>

</body>
</html>