致命错误：调用未定义的函数

Question

I have this

Fatal error: Call to undefined function date_add() in /home/....../public_html/wp-content/plugins/wp-ads/admin/edit-ad-update.php on line 70

The line have the folowing code:

date_add($ad_data["real_end_date"], new DateInterval("P".$ad_plan->days_length."D"));

Can some one help me?

Answer 1

date_add is available since php 5.3 . Check your php version. You can do that by using ... the phpversion() function, if it is available for your version of php, of course ;)