How can PHP developers troubleshoot errors or bugs in their file reading and writing processes?

When troubleshooting errors or bugs in file reading and writing processes in PHP, developers can start by checking the file permissions, ensuring the file exists, and handling exceptions properly. They can also use functions like file_exists(), is_readable(), is_writable(), and try-catch blocks to handle errors effectively. 

$file = 'example.txt';

if (file_exists($file) && is_readable($file)) {
    $content = file_get_contents($file);
    
    // Process the file content
    
    try {
        file_put_contents('newfile.txt', $content);
        echo 'File successfully written.';
    } catch (Exception $e) {
        echo 'Error writing file: ' . $e->getMessage();
    }
} else {
    echo 'File does not exist or is not readable.';
}

Keywords

file handling error handling debugging fopen fwrite

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