First, write your HTML code like this, and don’t forget to add
enctype="multipart/form-data"
<form action="upload.php" method="post" enctype="multipart/form-data">
<input type="file" name="fileToUpload" id="fileToUpload">
<input type="submit" value="Upload Image" name="submit">
</form>
Then create a file name called upload.php
<?php
$path = "form/";
$target_file = $path.basename($_FILES["fileToUpload"]["name"]);
$file=$_FILES['fileToUpload']['name'];
$result = move_uploaded_file($_FILES['fileToUpload']['tmp_name'],$target_file.$file);
if ($result) {
echo "file successfully uploaded";
}
else {
echo "please select your file";
}