How can a PHP beginner successfully implement a file upload feature on a form?

To implement a file upload feature on a form in PHP, a beginner can use the $_FILES superglobal to handle the uploaded file. The form should have the enctype attribute set to "multipart/form-data" to allow file uploads. The PHP script should move the uploaded file from the temporary directory to a desired location on the server. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST" && isset($_FILES["file"])) {
    $file = $_FILES["file"];
    $uploadDir = "uploads/";
    $uploadFile = $uploadDir . basename($file["name"]);

    if (move_uploaded_file($file["tmp_name"], $uploadFile)) {
        echo "File uploaded successfully.";
    } else {
        echo "Error uploading file.";
    }
}
?>

<form method="post" enctype="multipart/form-data">
    <input type="file" name="file">
    <input type="submit" value="Upload">
</form>

Keywords

PHP file upload form move_uploaded_file enctype

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