In what ways can PHP documentation and built-in functions like time() and mktime() be utilized effectively to calculate accurate date differences in PHP applications?

To calculate accurate date differences in PHP applications, you can utilize the built-in functions like time() and mktime() along with PHP documentation to accurately calculate the time intervals between two dates. 

// Example code to calculate the difference between two dates using time() and mktime()

$startDate = strtotime('2022-01-01');
$endDate = strtotime('2022-02-15');

$timeDifference = $endDate - $startDate;

$daysDifference = floor($timeDifference / (60 * 60 * 24));

echo "The difference between the two dates is: " . $daysDifference . " days";

Keywords

PHP documentation built-in functions time() mktime() date differences

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