What are common mistakes to avoid when working with dates and times in PHP?

Common mistakes to avoid when working with dates and times in PHP include not setting the correct timezone, not properly formatting dates and times, and not handling daylight saving time changes correctly. To avoid these issues, always set the timezone using `date_default_timezone_set()`, use `date()` or `DateTime` objects to format dates and times, and consider using functions like `strtotime()` or `DateTime` methods to handle time calculations accurately. 

// Set the correct timezone
date_default_timezone_set('America/New_York');

// Format a date using date()
$date = date('Y-m-d H:i:s');

// Create a DateTime object for more flexibility
$datetime = new DateTime();
$datetime->setTimestamp(strtotime('tomorrow'));
echo $datetime->format('Y-m-d H:i:s');

Keywords

DateTime strtotime timezone formatting daylight saving time

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