What best practices can be followed to ensure correct formatting of week numbers in PHP?
To ensure correct formatting of week numbers in PHP, it is important to use the `date()` function with the 'W' format specifier, which returns the ISO-8601 week number of the year. Additionally, it is recommended to set the timezone using `date_default_timezone_set()` to avoid any discrepancies in week numbering due to timezone differences.
// Set the timezone
date_default_timezone_set('UTC');
// Get the current week number
$weekNumber = date('W');
echo "Current week number: " . $weekNumber;
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