What potential issues can arise when copying PHP code from one file to another?

One potential issue that can arise when copying PHP code from one file to another is that the copied code may contain relative file paths or dependencies that are specific to the original file's location. To solve this issue, you can use PHP's magic constant `__DIR__` to dynamically reference the current directory in the copied code. 

// Original code with relative file path
include 'utils/functions.php';

// Copied code with dynamic file path using __DIR__
include __DIR__ . '/utils/functions.php';

Keywords

syntax errors variable scope function redeclaration namespace conflicts missing dependencies

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