How can PHP beginners troubleshoot issues with file uploads using $_FILES?

When troubleshooting file upload issues using $_FILES in PHP, beginners should first check the file size and file type restrictions set in the PHP configuration file (php.ini). They should also ensure that the HTML form containing the file input field has the attribute enctype="multipart/form-data" set. Additionally, beginners can use the $_FILES['file']['error'] variable to check for any errors that occurred during the file upload process. 

<form action="upload.php" method="post" enctype="multipart/form-data">
    <input type="file" name="file">
    <input type="submit" value="Upload File">
</form>

<?php
if ($_FILES['file']['error'] > 0) {
    echo "Error: " . $_FILES['file']['error'];
} else {
    move_uploaded_file($_FILES['file']['tmp_name'], "uploads/" . $_FILES['file']['name']);
    echo "File uploaded successfully!";
}
?>

Keywords

$_FILES file uploads troubleshooting PHP beginners error types

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