How Can I Rename Uploaded Files Before Saving Them Using PHP?

How to Rename an Uploaded File Before Saving It

You can upload files into a directory using move_uploaded_file(), which assigns the uploaded file's original name by default.

Renaming File with a Random Number

To rename the file with a random number, modify the second parameter of move_uploaded_file():

<?php
$temp = explode(".", $_FILES["file"]["name"]);
$newfilename = round(microtime(true)) . '.' . end($temp);
move_uploaded_file($_FILES["file"]["tmp_name"], "../img/imageDirectory/" . $newfilename);

This code generates a random number based on the current time and appends the original file extension.

Previous Attempts

Your previous attempts to rename the file were unsuccessful because you failed to update the second parameter of move_uploaded_file(). While you changed $_FILES["file"]["name"] to $fileName, this only affected the variable name, not the file name saved in the directory.

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