How PHP uses strtotime to calculate the number of days between two given dates

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The detailed analysis is as follows:

PHP's strtotime function is used to parse any date-time description of English text into Unix timestamps. This function will use the TZ environment variable (if any) to calculate the timestamp. It returns a timestamp if execution succeeds, FALSE otherwise. Prior to PHP 5.1.0, this function would return-1.

$date1 = date ('Y-m-d');$date2 = '2005-03- 01';$days = (strtotime () - strtotime()) / (60 * 60 * 24);echo "Number of days since '2005-03- 01':$days"; above is "How PHP uses strtotime to calculate the number of days between two given dates" All of this, thank you for reading! I believe that everyone has a certain understanding, hope to share the content to help everyone, if you still want to learn more knowledge, welcome to pay attention to the industry information channel!