How can one ensure flexibility and adaptability when defining file paths in PHP functions?

When defining file paths in PHP functions, it is important to ensure flexibility and adaptability by using relative paths instead of hardcoding absolute paths. This allows the code to be more portable and easily adaptable to different environments. One way to achieve this is by defining a base path variable at the beginning of the script and using it to construct all file paths relative to that base path. 

// Define base path
$basePath = __DIR__ . '/';

// Example function using relative file paths
function readFromFile($filePath) {
    global $basePath;
    $fullPath = $basePath . $filePath;
    
    // Read file contents
    $contents = file_get_contents($fullPath);

    return $contents;
}

// Example usage
$fileContents = readFromFile('data/file.txt');
echo $fileContents;

Keywords

file paths PHP functions flexibility adaptability defining

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