What is the limitation of using strtotime in PHP for generating timestamps?

The limitation of using strtotime in PHP for generating timestamps is that it relies on the server's timezone setting, which can lead to inconsistencies if the timezone is changed or not set correctly. To solve this issue, it is recommended to explicitly set the timezone using the date_default_timezone_set function before using strtotime to ensure consistent results. 

// Set the timezone to UTC before using strtotime
date_default_timezone_set('UTC');

// Generate a timestamp using strtotime
$timestamp = strtotime('now');

// Use the timestamp as needed
echo $timestamp;

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strtotime limitation timestamps PHP function

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