What potential issues can arise when using date comparisons in PHP scripts?

One potential issue that can arise when using date comparisons in PHP scripts is the mismatch between timezones. To ensure accurate date comparisons, it is important to set the timezone explicitly in your PHP script using the `date_default_timezone_set()` function. 

// Set the timezone to UTC
date_default_timezone_set('UTC');

// Perform date comparison
$date1 = new DateTime('2022-01-01');
$date2 = new DateTime('2022-01-02');

if ($date1 < $date2) {
    echo "Date 1 is before Date 2";
} else {
    echo "Date 1 is after Date 2";
}

Keywords

date comparisons PHP scripts timezone strtotime date_default_timezone_set

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