What are common issues with backslashes in file paths when working with PHP?

When working with file paths in PHP, using backslashes (\) can cause issues because they are interpreted as escape characters. To solve this problem, you can either replace backslashes with forward slashes (/) or use the PHP built-in function `addslashes()` to add escape characters before the backslashes in the file path. 

// Replace backslashes with forward slashes
$file_path = str_replace('\\', '/', $file_path);

// OR

// Add escape characters before backslashes
$file_path = addslashes($file_path);

Keywords

file paths backslashes PHP escape characters directory traversal

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