How to Synchronize PHP and MySQL Timezones for Accurate Date Handling?

Syncing PHP and MySQL Timezones for Accurate Date Handling

When storing dates in MySQL using the PHP date() function, discrepancies can arise if the PHP and MySQL timezones are not aligned. This issue becomes apparent when comparing dates in MySQL using the NOW() function, which relies on the server's timezone.

To address this challenge, consider the following steps:

Set PHP's Timezone:

<code class="php">define('TIMEZONE', 'Europe/Paris');
date_default_timezone_set(TIMEZONE);</code>

By defining a constant and setting the PHP timezone accordingly, all subsequent date() calls will use the specified timezone.

Adjust MySQL's Timezone Dynamically:

Instead of setting the timezone manually in MySQL's configuration or console, you can achieve synchronization dynamically within your PHP script:

<code class="php">$now = new DateTime();
$offset = sprintf('%+d:%02d', $now->getOffset() / 60, abs($now->getOffset()) % 60);
$db = new PDO('mysql:host=localhost;dbname=test', 'dbuser', 'dbpassword');
$db->exec("SET time_zone='$offset';");</code>

This convoluted approach ensures that MySQL's timezone is aligned with PHP's, regardless of the environment.

By following these steps, you can effectively synchronize the timezones in PHP and MySQL, enabling accurate date comparisons and eliminating discrepancies.

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