How can PHP developers ensure that file writing operations, such as those using fwrite, are secure and efficient in their applications?

To ensure secure and efficient file writing operations in PHP, developers should sanitize user input, validate file paths, handle errors appropriately, and use proper file permissions. Additionally, using functions like `fopen`, `fwrite`, and `fclose` correctly can help prevent security vulnerabilities and improve performance. 

$filename = 'example.txt';
$data = 'Hello, World!';

if ($handle = fopen($filename, 'w')) {
    if (fwrite($handle, $data) === false) {
        echo 'Error writing to file';
    }
    fclose($handle);
} else {
    echo 'Error opening file';
}

Keywords

PHP file writing fwrite security efficiency

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