What is the recommended method in PHP for deleting files, and what permissions are necessary for successful file deletion?

When deleting files in PHP, it is recommended to use the `unlink()` function. This function deletes the specified file. In order for successful file deletion, the file must have write permissions for the user running the PHP script. 

$file_path = 'path/to/file.txt';

if (file_exists($file_path)) {
    if (unlink($file_path)) {
        echo "File deleted successfully.";
    } else {
        echo "Error deleting file.";
    }
} else {
    echo "File does not exist.";
}

Keywords

PHP file deletion permissions unlink file system

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