How can I check if an uploaded file already exists in the destination folder in PHP?

To check if an uploaded file already exists in the destination folder in PHP, you can use the `file_exists()` function along with the `basename()` function to get the filename from the uploaded file path. This way, you can compare the filename with the list of files in the destination folder to see if a file with the same name already exists. 

$uploadDir = 'uploads/';
$uploadedFile = $uploadDir . basename($_FILES['file']['name']);

if (file_exists($uploadDir . $_FILES['file']['name'])) {
    echo "File already exists in the destination folder.";
} else {
    move_uploaded_file($_FILES['file']['tmp_name'], $uploadedFile);
    echo "File uploaded successfully.";
}

Keywords

file_exists is_uploaded_file move_uploaded_file destination folder PHP

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