What is the standard way to navigate directories in PHP when accessing files?

When accessing files in PHP, it is important to navigate directories correctly to ensure that the correct file paths are used. One standard way to navigate directories in PHP is to use the `__DIR__` constant to reference the current directory and then concatenate the desired file path to it. This allows for relative paths to be used consistently, regardless of the current working directory. 

// Example of navigating directories in PHP
$filePath = __DIR__ . '/folder/subfolder/file.txt';
$fileContents = file_get_contents($filePath);

echo $fileContents;

Keywords

directory navigation PHP file access functions libraries

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