In what ways can the default time zone settings in PHP affect the output of date and time functions, and how can developers override them effectively?

The default time zone settings in PHP can affect the output of date and time functions by displaying incorrect times or dates if not set correctly. Developers can override the default settings by using the `date_default_timezone_set()` function to set the desired time zone before using any date and time functions in their code.

php

// Set the default time zone to UTC
date_default_timezone_set('UTC');

// Now you can use date and time functions without worrying about the default time zone affecting the output
echo date('Y-m-d H:i:s');

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In what ways can the default time zone settings in PHP affect the output of date and time functions, and how can developers override them effectively?

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