What are some recommended ways to check file permissions before attempting to delete a file using unlink() in PHP?

Before attempting to delete a file using unlink() in PHP, it is important to check the file permissions to ensure that the script has the necessary permissions to delete the file. One recommended way to do this is by using the file_exists() and is_writable() functions to check if the file exists and if it is writable before attempting to delete it with unlink(). 

$file = 'example.txt';

if (file_exists($file) && is_writable($file)) {
    unlink($file);
    echo 'File deleted successfully.';
} else {
    echo 'Unable to delete file. Check file permissions.';
}

Keywords

file permissions unlink() PHP error handling security

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