How can nested includes affect the functionality of PHP scripts, and how can this be resolved?

Nested includes can lead to issues such as variable scope conflicts and file inclusion loops, which can affect the functionality of PHP scripts. To resolve this, it is recommended to use include_once or require_once instead of include or require to prevent multiple inclusions of the same file. Additionally, organizing files in a structured manner and using proper variable scoping can help avoid conflicts. 

// Example of using include_once to prevent nested includes issue
include_once 'file1.php';
include_once 'file2.php';

Keywords

nested includes PHP scripts functionality resolution errors

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