In PHP file storage, how do I gracefully handle failures?

When working with file storage in PHP, it is crucial to handle failures gracefully to ensure your application remains stable and provides a good user experience. This can include checking for errors during file uploads, ensuring permissions are correct, and handling exceptions that may arise during the file I/O operations.

Here’s an example of how to handle file storage operations with proper error handling:


        <?php
        function uploadFile($file) {
            try {
                // Check for file upload errors
                if ($file['error'] !== UPLOAD_ERR_OK) {
                    throw new Exception('File upload error: ' . $file['error']);
                }

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

                // Check if the upload directory is writable
                if (!is_writable($uploadDir)) {
                    throw new Exception('Upload directory is not writable.');
                }

                // Move the uploaded file to the desired location
                if (!move_uploaded_file($file['tmp_name'], $uploadFile)) {
                    throw new Exception('Failed to move uploaded file.');
                }
                
                echo 'File successfully uploaded!';

            } catch (Exception $e) {
                // Gracefully handle the error
                echo 'Error: ' . $e->getMessage();
            }
        }

        // Usage example
        if ($_SERVER['REQUEST_METHOD'] === 'POST') {
            uploadFile($_FILES['uploadedFile']);
        }
        ?>

In PHP file storage, how do I gracefully handle failures?

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In PHP file storage, how do I gracefully handle failures?

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